Showing posts with label whale. Show all posts
Showing posts with label whale. Show all posts

Wednesday, 22 July 2026

Meteor airburst over cachalot habitat

2026, July 21. North Atlantic Ocean, 240km NE from the coast of Guyana. Airburst. Coordinates: (9.4N, 57.4W). Time: 01.14UT. Altitude: 31.5km. Energy: e = 3.2e10. -e = 0.11 or 110,000 kg/TNT. It was seen from San Juan, Port of Spain in Trinidad and Tobago, 470 km to the west. Notes: Central region of cachalot (sperm whale) habitat. As in previous posts, these events usually highlight increased overall activity in the given region. 


Sperm whales could very well be present at that location and time of year. Depth and Bathymetry (The "Drop-Off"): Coordinates: 9.4°N, 57.4°W (240 km NE of Guyana's coastline). Seabed Profile: This position sits directly over the Guiana Continental Slope / Deep Ocean Basin, where ocean depths rapidly drop into the 1,500 m to 3,500 m+ range. Sperm whales (Physeter macrocephalus) are deep-diving pelagic foragers that almost exclusively frequent waters deeper than 1,000 meters along continental slopes and oceanic trenches where their primary prey (deep-sea squid) aggregate. July / Summer Seasonality: Social Units (Females & Calves): Unlike mature adult males that migrate to polar latitudes during the northern summer, female social pods, nursery groups, and young males remain in tropical and subtropical waters year-round (between ~40°N and 40°S). Guiana Basin Field Data: Marine surveys off the Guianas (Guyana, Suriname, and French Guiana) confirm that sperm whales are among the most frequently sighted pelagic cetaceans along the outer continental slope during summer months (May through September).

Tuesday, 14 July 2026

Update at Cape Cod and Bali

2026, July 14. USA, Massachusetts, Cape Cod, across a 9-mile stretch from Brewster to Wellfleet. A mass stranding of 19 bottlenose dolphins, a day after what rescuers described as the largest known bottlenose dolphin stranding in Massachusetts to date. Four dolphins were initially located in the Herring River "Gut" in Wellfleet before responders from IFAW discovered more. All 19 dolphins had refloated by late morning as the tide rose.

Also: 2026. July 14. Indonesia, Bali, Jembrana Regency, Perancak Beach. A humpback whale with a length of more than seven meters was found stranded. Rescue attempts failed to save the cetacean, which subsequently died a few hours after being found. It comes 4 days after the meteor event in post below. 

Update: 20260715. 2026, July 15. USA, Massachusetts, Boston, Winthrop. Dead whale.

Update on NASA-Detected Meteor Airbursts The current ratio of detected airbursts for 2025 vs. 2026 stands at 22:15. So far this year, 7 have occurred in southern latitudes compared to 8 in the northern hemisphere. 2026 - Over Ocean vs. Over Land: 10 events compared to 5 events.

Thursday, 2 July 2026

Mass whale stranding 11 days after meteor Airburst

Since the May 30th meteor airburst over Cape Cod Bay there has been one witnessed fireball on the coast of Delaware.  

2026, June 10. Canada, Nova Scotia, Sable Island National Park Reserve, about 290 kilometres southeast of Halifax. A mass stranding of 16 long-finned Black Dolphins (Globicephala melas, pilot whales) on Sable Island. Parks Canada reported the incident to the Marine Animal Response Society (MARS). Unfortunately, due to the location and state of the animals, intervention in this case was not possible.” The uniform timeline of this pod hitting the outer shelf sandbars exactly 11 days after the turn-of-the-month atmospheric event matches the classic behavioural delay window seen when deep-water odontocetes experience profound spatial disorientation before drifting shoreward.  

Image: K. Penn Parks Canada

2026, June 10. USA, Maine. A large decomposing great white shark was located floating offshore.

2026, June 20. USA, Delaware. Fireball. Travelling west close to land. Seen in states CT, MD, NC, NJ, NY, OH, Ontario, RI, VA and WV. Time: around 08:06 UT, 04:06 EDT.

2026, June 25. USA, New York, Long Island, Ditch Plains Beach, in Montauk, a town in East Hampton. A 40-foot female dead Humpback. In a moderate state of decomposition, with death occurring some weeks before. It was the same whale that had been observed floating and deceased the day before, showing significant evidence of scavenging. The level of decomposition strongly suggests the animal died out at sea weeks ago—placing its estimated time of death squarely within the immediate late-May/early-June window following the Massachusetts atmospheric airburst.

2026, June 25. USA, Rhode Island, a few miles northwest of Cox’s ledge (41° 16.88', -71° 24.391'), or 15km ENE of Block Island. A floating, dead, mature female Humpback was located 35km NE of the event above. In an advanced state of decomposition, similar to the above cetacean. The cetacean washed ashore at Block Island on the 28th at Fred Benson Town Beach. Photos sent by Mystic Aquarium's Animal Rescue Program to the Centre for Coastal Studies (CCS) confirmed the carcass is "Binary," a humpback well-known to researchers. She was first catalogued in the late 1980s and has tracking records documenting nine known calves over her lifespan. Her last live sighting on record was in 2022.  

Decomposing Humpback washed ashore at Block Island

Update 20260704:  2026, July 2. USA, Florida, North Atlantic. Seen in Central Abaco, Bahamas. Fireball. Time: around 01:18 UT on the 3rd. 21:15 EDT. Travelling NW.

2026, July 2. USA, North Atlantic. Seen in North Carolina and South Carolina. Fireball. Time: around 01:20 UT on the 3rd. 21:16 EDT. Travelling SW. May have been the same event as above.  


Note: Until the 1st of September, I'll only be covering Mass Cetacean Strandings and associated details.

Thursday, 11 June 2026

North East coast update (12 Days Post-Airburst)

Update: 20260612. Reported - 2026, June 10. USA, Maine. A large decomposing great white shark found floating offshore. 

2026, June 11. Canada, Newfoundland and Labrador, Conception Bay, Spaniard's Bay. Dead Humpback eventually washed ashore in the harbour. COD: NA at the moment. The line running from the Cape Cod Bay squid influx (seasonal die off), up to the Conception Bay humpback mortality represents the primary geographic arc under observation since the May 30 explosion. Though the Atlantic longfin inshore squid die off every spring, they don't typically end up on local beaches because they are eaten by fish. This species, with a short, one-year life span, usually migrate closer to the shoreline to spawn at the end of their lifecycle and then the adults die off. I am continuing to scan for any further data on pelagic bird drops or deep-water fish mortalities along the Nova Scotia and Newfoundland shelves. To the south: Dolphins have been reported across several Chesapeake Bay waterways this week, including the Patuxent River, Potomac River, South River, Severn River, West River, Magothy River, and Corrottoman River.

Note: Meteor Airbursts close to land or over closed waterways are difficult to read, so this event could play out over time and a large distance from the atmospheric incident. There doesn't seem to be any repeated sightings or reports of meteor activity over the water, so this is a good sign. 

Wednesday, 27 May 2026

Mass dolphin stranding in Taiwan

2026, May 27. Taiwan, Penghu, near Shagang Village. Three pantropical spotted dolphins were found dead after spending an extended period in a local harbor.

Image: Penghu County Government

Also: 2026, May 24. Ireland, Co. Cork, Lispatrick Lower, Garrylucas beach. A young adult Minke Whale 4.7 meters long stranded and died. COD: Unknown.

2026, May 24. USA, Washington, Olympic National Park, Unk. Dead whale floating offshore.

2026, May 25. Philippine Sea, the coastal waters northeast of the Bicol Peninsula, east of the island of Tinaga. Fireball.  Time: 10:33 p.m. local time (10:33 a.m. EDT). Travelling SSE.

2026, May 27. USA, Western New York and Southern Ontario. Fireball. Time: 05:15 LT. Sonic Boom reported.

Imagery captured by the Cooperative Institute for Research in the Atmosphere at Colorado State

Sunday, 10 May 2026

Fireball over Bass Strait/Tasman Sea region

Preliminary report: 2026, May 10. Tasman Sea, East of Flinders Island. Fireball. Time: ~21:28hrs UTC+10. No sonic boom heard in Tasmania or Victoria. Duration: 5 seconds. No infrasound signal detected. Seen from Launceston, Granton, Arthurs Lake, Tasmanian east coast and Packenham in Victoria. Travelling NNE to SSW. A smaller fireball was seen in the same region, 2 hours earlier at 19:27, further to the east.


Also: 

2026, May 10. Japan, Kyoto, Garashiyama Plateau. Fireball. Time: 03:28LT. Duration: 15+ seconds.

2026, May 9. Poland, Baltic coast, northern Pomeranian region, Mewia Łacha nature reserve near the mouth of the Vistula River, close to the village of Mikoszewo. Dead baleen whale in advanced state of decomposition, roughly 5m long.

Tuesday, 7 April 2026

The 1950 Meteor Airburst and following Cetacean Deaths

1950, June 21. Australia, Tasmania. Meteor Airburst. Called the “Tasmanian Incident”. Time: Approximately 12:15 AM to 12:30 AM. Described as a violent event. This was a rare, slow-moving bolide that traveled from the NW to the SE, exploding over the Tasman Sea. Reports note that residents as far away as Launceston and the Huon Valley felt the "violent" rattle, over 170km apart. Duration: Witnesses described a slow-moving, brilliant object that took nearly one minute to cross the sky. This long duration suggests a very shallow entry angle (an "earth-grazer"), which allows the shockwave to be distributed over a massive horizontal distance rather than a single point. As it moved toward the Tasman Sea, it culminated in what was described as a "violent explosion" or series of detonations. Residents across Tasmania—from Hobart to the north coast—were jolted awake. Many reported the rattling of windows and a low-frequency rumble that lasted for several seconds after the visual flash had disappeared. Marine Impact High (Acoustic coupling with water).

1950, July 3 (Reported). Tasmania. A 50ft. A dead whale floating bottom up caused a wreck scare. People who saw it about three miles-off Lisdillon.

1950, July 4. Tasmania, Iron Pot / Derwent. 2 Cachalots (Sperm Whales) seen "disoriented" and "unresponsive." Witnesses stated they were "milling aimlessly" near the Iron Pot lighthouse at the entrance to the Derwent. They noted they seemed unresponsive to the noise of passing fishing vessels—a classic sign of acoustic nerve deafness.

1950, July 9. Tasmania, Tasman Peninsula (near Safety Cove/Port Arthur area). A Beaked Whale live-stranded; appeared "exhausted." This date is critical because it represents the "final exhaustion" phase. The animal likely spent the weeks since the June 21 burst unable to dive or feed due to balance (vestibular) failure caused by the airburst's pressure wave. It reportedly made no effort to return to the water even as the tide rose, suggesting total vestibular (balance) failure.

1950, July 15. Tasmania, South Arm. Reports of "large carcasses" seen floating offshore.  

Atmospheric Hammers. Meteor Airbursts and Cetaceans

Infrasound (Delayed): These are low-frequency sound waves (below 20 Hz) that are inaudible to humans. They travel long distances through the atmosphere and are often used by scientists to calculate the energy of a bolide explosion.

Electrophonic Meteor Sound (Instantaneous): This is a "simultaneous" sound (hissing or popping) heard at the exact moment the meteor is seen. It isn't a true sound wave traveling through air; instead, it's caused by Very Low Frequency (VLF) radio waves generated by the meteor’s plasma trail that instantly vibrate local objects (like glasses or hair) near the observer.

Delayed Sound (Delayed): This is the conventional "sonic boom" or rumbling heard several minutes after the visual sighting. Because sound travels much slower than light (roughly 340 m/s), there is a significant lag between seeing the flash and the physical shockwave reaching your ears.

When a meteoroid enters the atmosphere, it isn't just a rock falling; it is a kinetic energy bomb.

The Physics of the Airburst. An airburst occurs when the hydrodynamic pressure (the force of the air pushing against the front of the meteor) exceeds the structural integrity of the object.

Pancake Effect: As the meteor fragments, its surface area increases exponentially. This causes it to dump all its remaining kinetic energy into the atmosphere almost instantly.

Altitude: Most significant airbursts occur between 20 km and 50 km (Chelyabinsk was at roughly 30 km). If the object is stronger (iron-rich) or larger, it penetrates deeper (Tunguska was at 5–10 km), which drastically increases ground damage.

Blast Force: The energy is measured in TNT equivalents.

  • Chelyabinsk (2013): ~500 kilotons (30x Hiroshima).

  • Tunguska (1908): 10–15 megatons (1,000x Hiroshima).

The Sound: Delayed vs. Concurrent

This is where the physics gets "spooky." Most people expect sound to follow the "lightning and thunder" rule, but meteors offer two distinct auditory experiences:

Delayed Sound (The Sonic Boom). This is the standard shockwave. Since the meteor travels at hypersonic speeds (up to 72km/s), it leaves a cone of pressurized air behind it. Because sound travels at roughly 343m/s, witnesses often see the flash and wait 2 to 3 minutes before the windows shatter from the blast.

Concurrent Sound (Electrophonic Meteors). For centuries, people reported hearing "hissing," "sizzling," or "popping" at the exact same moment they saw the flash. Since the meteor is 30 km away, physical sound shouldn't reach them for 90 seconds.

There are two primary scientific explanations for this:

1. Photoacoustic Coupling: The meteor’s light pulses so intensely that it rapidly heats local objects near the listener (like hair, leaves, or dark clothing). These objects then vibrate and create "local" sound waves.

2. VLF Radio Waves: The plasma trail of the meteor generates Very Low Frequency (VLF) electromagnetic radiation. This radiation travels at the speed of light and can be "transduced" into sound by nearby metallic objects (like a wire fence or even glasses) acting as a natural antenna.

3. Comparison of Energy Deposition

Feature; Chelyabinsk (2013); Tunguska (1908)

Object Diameter: ~18–20 meters; ~50–80 meters

Burst Altitude: ~30 km; ~5–10 km

Energy Release: 500 Kilotons;10–15 Megatons

Primary Damage: Broken glass/Infrasound; 2,000 km^2 of levelled forest.

The difference between Infrasound and Electrophonic Sound.

Infrasound is a physical "push" of air that arrives late, while Electrophonic sound is an instant "radio signal" that your brain translates into noise.

1. Infrasound: The Low-Frequency Hammer. Infrasound refers to sound waves with a frequency below 20 Hz, which is the lower limit of human hearing. The Mechanism: When a meteor fragments or creates a shockwave, it displaces a massive amount of air. This creates a low-frequency pressure wave. The "Long-Distance Traveler": Because these waves have very long wavelengths, they aren't easily absorbed by the atmosphere. They can travel thousands of kilometers. Detection: While we generally can't "hear" them, we can sometimes feel them as a strange pressure in the chest or ears. Scientists use specialized "microbarometers" (high-precision pressure sensors) to track them.Connection to Whales: As we've discussed before, large cetaceans like Blue whales use infrasound to communicate across entire ocean basins. A meteor airburst essentially "screams" in the same frequency range that whales use for long-distance calls.

2. Electrophonic Sound: The Instant Sizzle. As we touched on, these are heard at the exact same moment the meteor is seen, defying the speed of sound. The Mechanism: It is not a pressure wave traveling through the air. Instead, the meteor’s plasma trail creates VLF (Very Low Frequency) radio waves or intense light pulses. The "Translation": These electromagnetic waves travel at the speed of light. When they reach the ground, they interact with nearby objects (like your hair, a fence, or even dry pine needles), causing them to vibrate slightly or create "photoacoustic" effects. The Experience: You hear a sharp pop, hiss, or crackle.

Key Differences at a Glance

Feature

Infrasound

Electrophonic Sound

Speed

Speed of Sound (~343 m/s)

Speed of Light (~300,000 km/s)

Timing

Delayed (arrives minutes later)

Concurrent (heard instantly)

Audibility

Usually felt, not heard (below 20 Hz)

Clearly audible (hissing/popping)

Travel Distance

Global (can circle the Earth)

Local (only near the observer)

Medium

Air pressure waves

Electromagnetic/Light energy

Recent Study (2023): A major analysis found that out of roughly 1,000 fireballs in the NASA database, only about 65 distinct events produced a clear enough infrasound signature to be pinpointed by the CTBTO arrays. This is usually because the entry angle must be steep enough to "couple" the energy into the lower atmosphere.

Measuring the "decibel" level of a meteor at sea level is tricky because a meteor airburst isn't just a loud noise—it is a supersonic shockwave.

At the point of the airburst (high in the atmosphere), the sound is so intense that it exceeds the physical limit of what "sound" can be.

1. The "Sound Barrier" (194dB

In our atmosphere at sea level, the loudest possible "undistorted" sound is approximately194dB

  • Why? At 194dB, the "low pressure" part of the sound wave becomes a perfect vacuum. If you try to go louder, the air can't physically move any further back, and the sound wave turns into a shockwave (a wall of moving air).

  • The Meteor: A major airburst like Tunguska or Chelyabinsk is estimated to reach 300dB or more at the source. This is not "sound" you would hear; it is energy that would vaporize or liquefy any biological tissue instantly.

2. Estimated Levels at Sea Level (Ground Level)

When the blast from an airburst at 20–30 km altitude finally reaches the ground, the decibel level depends on your distance from "Ground Zero."


Distance from Blast

Estimated Decibels (dB)

Physical Effect

Directly Underneath

170\180+dB

Immediate eardrum rupture, structural damage, permanent hearing loss.

50km away

140\150dB

Pain threshold; similar to standing next to a jet engine; windows shatter.

100km away

120\130dB

Deafening thunder; car alarms triggered; potential minor ear damage.

3. The "Infrasound" Component

While the audible "boom" might be 130 dB, the infrasound (the part whales might sense) can remain at high "perceived" energy levels for much longer.

  • Chelyabinsk (2013): Even hundreds of kilometers away, the infrasound pressure was strong enough to be detected by sensors as a "spike" that would equate to roughly 90 dB if it were in the audible range.

  • To a human, this feels like a sudden, phantom change in barometric pressure—your ears "pop" or you feel a wave of nausea, even if you don't "hear" a loud bang yet.

4. Comparison to Whale Sonar

To give you a perspective from previous conversations:

  • Sperm Whale Click: ~ 230dB (underwater).

  • Meteor Airburst (at source): ~ 300dB (in air).

  • Note: 300 dB in air is vastly more powerful than 230 dB in water due to how the scales are calculated and the density of the medium.

Sunday, 5 April 2026

Cetaceans: Tuned to Strand

 Part One.

In most cetaceans, the bone structure of the left and right ear—specifically the tympanoperiotic complex (TPC)—is physically very similar, but they are not always perfectly identical in function or position. The level of difference depends largely on whether you are looking at Odontocetes (toothed whales/dolphins) or Mysticetes (baleen whales).

Symmetry vs. Functional Asymmetry: While the individual bones themselves (the periotic and the tympanic bulla) are usually mirror images of each other, their placement and resonant properties can differ.

Odontocetes (Toothed Whales): They exhibit extreme cranial asymmetry, where the bones of the right side of the skull are typically larger and shifted leftward. This asymmetry is primarily in the facial region to accommodate sound-producing organs (like the melon and phonic lips). Interestingly, while the ear bones themselves are morphologically similar, the surrounding skull architecture is often "wonky."

Mysticetes (Baleen Whales): Their skulls are generally symmetrical. However, recent studies on fin whales have shown that the left and right TPCs have slightly offset resonance frequencies. This means the left ear might be "tuned" to a slightly different frequency than the right, which helps the whale determine the direction of a low-frequency sound.

Key Components of the Cetacean Ear: The structure of the cetacean ear is unique because it is "decoupled" from the rest of the skull to prevent the whale's own voice from deafening it.

Feature

Description

Tympanic Bulla

A heavy, shell-like bone that vibrates in response to sound.

Periotic Bone

A very dense bone that houses the inner ear (cochlea).

Acoustic Isolation

The ear bones are suspended by ligaments or surrounded by air sinuses/fats, rather than being fused to the skull.

Directional Hearing and Asymmetry:

In terrestrial mammals, we use the time difference between sound hitting the left and right ear to locate a source. Because sound travels so fast in water, cetaceans rely on:

Acoustic "Fat Pads": Channels in the lower jaw that lead sound to the ears.

Mental Foramina Asymmetry: In some dolphins, the rows of small holes in the jaw (mental foramina) are positioned differently on the left and right, acting as an asymmetrical "antenna" to help pinpoint sounds.

Research on meteor airbursts and their connection to strandings, this ear asymmetry is particularly relevant. If an atmospheric pressure wave or acoustic pulse from an airburst strikes a whale, the slight differences in how the left and right ears process those frequencies could potentially impact their navigation or cause disorientation. The asymmetrical ear damage is scientifically compelling, especially when considering the unique "wonky" anatomy of toothed whales (Odontocetes).

Part Two.

While current marine biology hasn't definitively proven that one specific side (e.g., the left) is always more prone to fractures, the structural asymmetry of the toothed whale head creates a scenario where a loud noise—like a meteor airburst or sonar—is unlikely to affect both ears equally.

Does Loud Noise Affect One Ear More?

Yes, for several structural reasons:

Directional Shadowing: Because sound travels so efficiently in water, the whale's own head acts as an "acoustic shadow." If a massive pressure wave from a meteor airburst originates from the whale's left, the left ear receives the full force of the pulse, while the right ear is partially shielded by the dense structures of the skull and the air-filled sinuses.

Cranial Asymmetry: In toothed whales (like the pilot whales and beaked whales you study), the right side of the skull is typically larger and shifted. This means the acoustic pathways (the "fat pads" in the jaw) and the seating of the tympanoperiotic complex (TPC) are not mirror images. One side may be more rigid or have a different resonance frequency, making it more brittle or susceptible to high-pressure "shocks."

Pathological Evidence: In strandings linked to acoustic trauma (like the 2000 Bahamas event), researchers have found hemorrhages in the acoustic fats and the cochlea. While these are often reported on both sides, the severity often differs, which would lead to an "acoustic tilt" where the whale can no longer tell where "up" or "out to sea" is.

Hairline Fractures and "Invisible" Trauma:

The "Periotic" Bone: The ear bone is the densest bone in the mammalian body. It doesn't bend; it shatters or cracks.

Pressure Waves vs. Sound: A meteor airburst isn't just a "noise"; it’s a physical pressure wave. Studies on museum specimens have found healed fractures in whale ear bones, proving they can survive some trauma. However, a fresh hairline fracture caused by a sudden pulse would cause:

Severe Pain: Likely causing the animal to "panic swim."

Loss of Equilibrium: Similar to vertigo in humans.

Echolocation Failure: If the bone that houses the inner ear is cracked, the whale's biological "sonar" becomes distorted, making it impossible to navigate shallow coastal waters.

Connection to Stranding Events: If a whale's hearing becomes asymmetrical due to injury (e.g., the left ear is "deafened" or fractured), the animal will experience bi-aural disparity.

The whale might constantly turn toward the "quiet" (damaged) side, leading it in circles or straight into a shoreline.

In mass strandings, if the lead whale (the "navigator") suffers this asymmetrical trauma, the rest of the pod—following their social instinct—will follow that navigator right onto the beach.

Summary Table:

Feature

Impact of Asymmetrical Damage

Acoustic Shadowing

One ear takes the "brunt" of the blast based on orientation.

Resonance Mismatch

A fracture changes the bone's "tuning," making echolocation data "garbage."

Navigational Bias

Damage to one side causes the whale to veer consistently in one direction. This can sometimes indicate which side they were "veering" toward before they hit the sand.

Part Three

When looking at strandings globally across all years, asymmetrical damage causing these events aligns with several established biological and acoustic principles. While "left vs. right" hasn't been definitively categorized in every necropsy, the asymmetrical vulnerability of toothed whales is a major factor in stranding research.

The Vulnerability of Deep-Divers: Global data shows that Odontocetes (toothed whales) are the primary victims of mass strandings, specifically those that inhabit deep waters and live in tight-knit social groups.

Commonly Stranded Species: Pilot whales, Sperm whales, Beaked whales, False killer whales, and Melon-headed whales.

The Acoustic Link: Because these species rely on high-intensity echolocation for deep-sea hunting, their ear structures (TPCs) are highly specialized and "decoupled" from the skull. This makes them exceptionally sensitive to the massive pressure changes caused by an atmospheric airburst.

Why One Ear May "Break" First

In a "perfect" symmetrical head, a sound wave from the front would hit both ears equally. However, toothed whales have evolved cranial asymmetry (the right side of the skull is usually larger).

Acoustic Shadowing: If a meteor airburst occurs to the side of a pod, the "head-shadow effect" means the ear facing the blast receives the full kinetic energy of the pressure wave, while the other is shielded by the density of the skull.

Structural Weak Points: Because the left and right ear bones are seated in asymmetrical "pockets" of fat and air, they don't vibrate at the same frequency. A specific frequency from a bolide entry might hit the resonant frequency of the left ear but not the right, causing "hairline fractures" or hemorrhaging on only one side.

The "Veering" Effect and Navigation Failure: If one ear is damaged (acoustic trauma) while the other remains functional, the whale experiences a complete loss of bi-aural localization.

Directional Bias: Much like a plane with one engine failing, a whale with one damaged ear will likely "veer" in the direction of the injury or away from the perceived "loudness" that it can no longer balance.

The "Follow-the-Leader" Trap: In species like Pilot whales, the pod follows a lead navigator. If that single leader suffers asymmetrical ear trauma and begins veering toward a coastline, the entire pod will follow them into the shallows, regardless of their own health.

Challenges in Proving Theory: The reason "hairline fractures" aren't reported in every stranding is due to Post-Mortem Decay.

The "Hours" Window: The delicate tissues inside the ear bone (the cochlea and hair cells) begin to liquify within hours of death.

Hard Bone vs. Soft Tissue: While the periotic bone is like porcelain and can show fractures, most researchers look for hemorrhaging (bruising) in the "acoustic fats" of the jaw. If the whale has been dead on the beach for more than a day, this evidence is often lost to decomposition.

Comparison of Stranding Factors

Factor

Effect on Ear Symmetry

Result

Meteor Airburst

Massive pressure pulse

Physical fracture or "stunning" of the nearest ear.

Deep Diving

High ambient pressure

Compresses air sinuses, making ears more rigid and brittle.

Social Cohesion

"Navigator" dependency

One injured ear can lead a hundred whales onto the beach.

Monday, 23 March 2026

The "Slow" 2019 Whale Season and the Meteor Airburst in Southern Australia

Direct Migration Path: In May, Southern Right Whales are actively moving from the sub-Antarctic feeding grounds (40°S–60°S) toward the coastal nurseries of Warrnambool (Logans Beach) and the Great Australian Bight. The May 21 airburst happened exactly when the lead females would have been approaching the coast.

The "Adelaide Fireball".

2019, May 21. Large Airburst. Time: ~10:30 PM local time, 13:12UT. Energy/Size: It was estimated the object was roughly the size of a small car, weighing in at between 20 to 40 tonnes. Altitude: 31.5 km. Velocity: 11.5 km/s. Impacted 440km south of Adelaide in Great Australian Bight or 430 km east of Warrnambool in Victoria. It was 260 km from the nearest coastline in South Australia. Energy: e (Radiated Energy in Joules) = 65.6e10. Impact yield 1.6 kt or equivalent to 1,600,000 kg of TNT. CCTV from Safety Beach on Victoria's Mornington Peninsula showed a huge ball of light falling from the sky and illuminating Port Phillip Bay. It was also caught on dashcam from Adelaide. At Horsham it was described as “a huge bright white light”. CNEOS data and infrasound arrays recorded a significant atmospheric disruption. The meteor moved from north to south, flaring green and then orange. It was visible from Adelaide (SA) all the way to the Gippsland coast (VIC). Acoustic Impact: Residents across South Australia and Western Victoria reported a "massive boom" that made houses and the earth "shake visibly." This indicates a low-altitude airburst or a significant sonic boom from a large fragment.

Because stony meteorites are more likely to explode violently in the mid-to-lower atmosphere, they release their kinetic energy as a massive pressure wave (infrasound) all at once. If the airburst occurred over the shelf or near the coastline (fragments were suspected to have landed in the ocean), the resulting infrasound would have been intense. For a species that relies on low-frequency sound for navigation and social cohesion, a 1.6 kt-equivalent "thump" could have acted as an acoustic deterrent. Geographic Mapping of the bolide's trajectory (North to South over SA/VIC) means the pressure wave would have propagated directly into the Great Australian Bight and the Bonney Upwelling (a major whale corridor).

In 2018 South Australia recorded 789 individuals. In 2019, the year of this major bolide, the numbers dropped to 577. This ~27% drop in sightings is often attributed to natural "calving cycles," but the presence of a car-sized meteor exploding over the migration corridor just as it started provides a strong physical alternative. It suggests the whales didn't just "fail to show up"—they were likely deterred or disoriented by the acoustic impact.

The Southern Right Whale population has still not recovered from this event.

There was a large airburst in 2014 off Antarctica, one in 2015 in the migration corridor (SRW population plateaued), two in 2017, before the 2019 event. Humpbacks go where they want when they want; they adapt, SRW do not. These whales are more fragile and favour routine and regular habitats far more than humpbacks.

Airburst above Gulf of Alaska, NE Pacific

2026, March 23. Gulf of Alaska, NE Pacific, Airburst. Coordinates: (54.6N, 144.1W). Time: 19:23UT. Altitude: 35 km. Velocity: 11.48 km/s. Entry angle of approximately 54.1°. Energy: e = 5.1e10. -e = 0.17 or 170,000 kg/TNT. This is the sixth airburst of the year calculated by NASA. Note: A velocity of 11.48 km/s is particularly interesting because it is very close to the Earth's escape velocity (~11.19 km/s). This indicates a "slow" entry, which is characteristic of: Asteroidal origin: Objects coming from the inner solar system often have lower entry speeds. Meteorite potential: Because the velocity is low, the object experiences less intense heating and atmospheric pressure, making it much more likely that fragments survived to reach the ground or ocean as meteorites. A slow, deep-penetrating bolide at 11.48 km/s would create a sustained sonic boom (shockwave) that travels differently through the atmosphere and into the ocean than a high-velocity "disintegrator." With Europe and the USA having sustained rockfalls, it seems an undetected NEO has broken apart, or preliminary debris for an upcoming larger event. 

Marine Animal Disturbance Alert: A watch for cetacean strandings should be noted for Alaska, the surrounding Aleutian Islands and British Columbia. 

Tuesday, 3 March 2026

New Zealand Update

2026, February 26. New Zealand, near Port Waikato. Single small cetacean. Māui and Hector’s dolphins look nearly identical; DNA testing is required to confirm which subspecies it is. Based on location, it is likely a Māui dolphin, of which only 48–64 individuals remain.

2026, March 3. New Zealand, Auckland, St Heliers. Shepherd's beaked whale stranded and refloated on high tide.  Update 20260305: Despite the successful refloat, the whale was found again the next morning at Hobsonville Point, around 25–30 km away from the original stranding point.

2026, March 3. New Zealand, Pareora Beach, south of Timaru, on the east coast of the South Island. A deceased juvenile female humpback whale. It's the first Humpback to strand in the region in seven years. Authorities are investigating the death.

See posts below for past meteor activity and strandings.

Saturday, 7 February 2026

The 2003 Whatipu Stranding & Leonid Fireballs

The stranding occurred exactly during the peak of the 2003 Leonid meteor shower. Astronomers recorded that while the overall meteor count was moderate, this specific year produced a high concentration of fireballs (bolides).

Leonid meteors are the fastest of any annual shower, entering at roughly 72 km/s (161,000 mph). This velocity is critical for research because it means even small objects generate massive kinetic energy and atmospheric shockwaves upon entry.

During the early morning hours of November 14, observers across the South Pacific reported multiple bright fireballs. One specific report from a NASA-affiliated team noted a "significant bolide" over the Pacific Rim around the time the whales would have been approaching the coast.

Seismic Quietude vs. Atmospheric Noise: GeoNet records for the Auckland region on November 13–14 show no significant tectonic earthquakes. This is important, as it eliminates "ground-up" seismic confusion and points toward an "air-down" acoustic event (like an airburst).

The absence of seismic activity (earthquakes) on the morning of November 14, 2003, points toward an external trigger. Given the peak of the high-velocity Leonid bolides and the reported fireball activity in the South Pacific that morning, the hypothesis that an atmospheric airburst disrupted this bachelor pod’s navigation remains compelling.

To add to the above are the two airbursts in the region that also contributed to strandings.

2003, November 1. Tasmania, SW of island in Southern Ocean. Airburst. Time 14:09. (-51.4 S, 151.7 E). Blast force 213,000 kg of TNT.

2003, November 10. Off the coast of Antarctica. Airburst. Time 13:54, (64.5 S, 136.2 E). Blast force equivalent to 1,300,000 kg of TNT.

Resulting stranding events.

2003, November 18. Tasmania, Point Hibbs. A remote location south of Strahan. A mass stranding of 110 Black Dolphins (pilot whales) and 10 bottlenose dolphins die. They had been dead for several days before this finding date. Discovered by an abalone diver.

2003, November 28. Tasmania, Arthurs Bay near Whitemark, Flinders Island. A mass stranding of 10 Cachalots (Sperm Whales). Died 9; Survived 1. The lone survivor was found 200 meters off shore in good condition considering the predicament it found itself in.  

Wednesday, 4 February 2026

Chile fireball and cetacean strandings

2026, February 3. Chile, province of San Antonio, commune of Algarrobo, rocky area of El Yeco. A specimen of Sei whale (Balaenoptera borealis), washed up dead. In addition, a dolphin a calf of the species: Dusky or Fitzroy's dolphin (Lagenorhynchus obscurus), stranded on the coast of southern beach of Santo Domingo, province of San Antonio. 

A fireball reported two days previously on January 31st at 22:55. It lasted 4 seconds and covered a region of sky of approximately 60 degrees. It was travelling in a easterly direction. It is the only fireball reported in Chile this year.


Thursday, 8 January 2026

Mass stranding in New Zealand and meteor activity

2025, December 30. New Zealand, Tasman Sea west of South Island. Fireball. Time: 14:47UTC. Velocity: 68.45 km/s. Duration: 3.78 sec travelling SW. Coordinates: ( -41.33, 170.98), LLE: (-42.51, 168.49). Altitude: 114.87 to 105.67 km.

2026, January 4. New Zealand. Cook Strait. Fireball. Time: 21:18NZDT, twilight. Heading SE. Seen from Wellington. This event was bright, as it wasn't fully dark. 45 degrees above horizon.

2026, January 5. New Zealand, North Island, west coastal region/Tasman Sea. Fireball. Time: 08:49UTC. Duration: 3.97 sec travelling NW south of Auckland. Coordinates: LLB: (-38.06, 175.84), LLE: (-36.73, 173.65). Altitude: 120.85 to 101 km.  

2026, January 8. New Zealand, Golden Bay/Mohua, Farewell Spit, near Triangle flat car park. A mass stranding of 63 Black Dolphins (pilot whales) occurred across three groups. Small up to large. Jan 9; 7:30AM. Of the 66 whales that stranded yesterday, 15 have restranded over 1km of beach and six deceased.

Update: 20260111. The 15 whales that were refloated have restranded at two sites - Pūponga and Farewell Spit. 

Update: 20260112: The remaining 11 were ethunaised. 42 returned to sea. Total number 21 dead?

Sunday, 28 December 2025

Cachalot dead in Spain

2025, December 27. Spain, Costa Brava, Platja d'Aro beach. A Cachalot (sperm whale) calf washed ashore dead after a days-long levanter storm. The tether line dragged the cetacean to shore. 

2025, December 27. Malaysia, Borneo, beach in Karambunai. Dolphin stranded prompted investigations by the relevant authorities, with officials confirming that a report has been received.

Image: Berta Artigas Fontàs

Thursday, 18 December 2025

Two Beaked whales die in Taiwan and Argentina. Update: 20251223 Japan

2025, December 16. Argentina, at San Clemente del Tuyú. A beaked whale (Ziphiidae) stranded on the beach. Rescuers tried to refloat the animal however it was found lifeless the next morning. Preliminary necropsy results revealed pneumonia and a high gastrointestinal parasite load, likely causing its death. The stranded whale was a juvenile male, 4.32 meters long and weighing about one ton. Rescue was complicated by low visibility and the whale’s repeated circular swimming pattern, typical of cetaceans in poor health.

2025, December 17. Taiwan, Xiaoliuqiu. Shanfufu Fishing Harbor. Beaked whale, about 4 meters long at a depth of 12 meters underwater. The cause of death is currently unknown, but fishing gear entanglement is likely the cause. 

Update: 20251223. 2025, December 21. UK, Cornwall, Mount's Bay region, Marazion. Cuvier's beaked whale washed ashore in advanced state of decomposition. Muscle and skin samples were taken for genetic testing two teeth to go for Isotope examination.

2025, December 23. Indian Ocean, midway between Mauritius and Port Mathurin. Two Blainville's beaked whales (Mesoplodon densirostris) were reported dead on the 19th. Both were found dead at sea and imaged at the side of a fishing trawler. They were not caught in trailing gear, and COD is unknown. No injuries were observed externally. It came after a large 6m long Layard's beaked whale was observed the day before with the same observation outcome. Over two dozen beaked whales observed dead in 2025 so far in southern Indian Ocean.

2025, December 5. Japan, Hokkaido, Shihidaka. A 537.8cm female Hubbs’ beaked whale (Mesoplodon carlhubbsi). Photo: ©Muroran Department of Public Works Management Mombetsu Branch.

  

Argentina
Taiwan
Japan

Saturday, 13 December 2025

New Zealand stranding update after meteor

2025, November 29. New Zealand, east of South Island over the ocean. Long Duration Meteor. Time: 03.21. Duration: 15+ seconds. Travelling in a SW direction at 71.8 km/s. Height: (151 to 118km). See November 29th post. 

2025, December 10. New Zealand, SE South Island, Dunedin, Waitati, Blueskin Bay. A juvenile bottlenose dolphin was found stranded and refloated. The dolphin was approximately 600 metres from the water and alone.

2025, December 14. New Zealand, SE South Island, Oamaru. A dead Orca (Killer Whale) was located floating from shore in a moderate state of decomposition.  

Image: Oamaru Live Facebook

Friday, 24 October 2025

Meteor Airbursts and their effect on cetaceans at the surface

Note: I removed the math from this to make it easier to read. I have placed the summary first, which covers the findings; however, read on if you want further information.

Summary: Whales at or breaking the sea surface face substantially increased risk from a meteor airburst compared with fully submerged animals. Surface exposure eliminates the large air–sea impedance loss for the portions of the animal in air, allowing the full airborne overpressure and impulsive loading to act on the blowhole, respiratory tract, and dorsal tissues. Open airways provide a direct coupling pathway for pressure impulses into pulmonary structures, and the impulsive loading of the middle/inner ear and soft tissues increases the likelihood of trauma or temporary/permanent auditory effects. Crucially, surface exposure also magnifies behavioral risk: a sudden, intense airblast can provoke a strong startle or panicked flight response while simultaneously producing surface jets or hydrodynamic forcing that physically displace animals into shallow water or drive them toward shore. Therefore, while large-scale hearing injury from airburst-coupled underwater signals remains uncommon except near energetic epicenters, the combination of direct airblast effects and behavioural consequences makes presence at the surface a significant risk factor for strandings.

If whales are at the surface when an airburst occurs, the risk goes up — sometimes substantially — because they can be exposed directly to the airborne blast (no −30 dB air→water penalty) and because the blast can act on the animal’s blowhole, lungs and sensory organs. Direct air exposure: A whale at or breaking the surface presents air-facing tissues (blowhole, rostrum, dorsal area) that receive the full airborne overpressure and impulse. There is no large impedance mismatch loss for those parts — the animal is effectively in the same medium as the source. Open airways: If the blowhole is open or the animal inhales/exhales at the time, the airway and lungs can be coupled to the airblast — increasing risk of barotrauma and blunt pressure effects. Combined loading modes: The animal may simultaneously receive (a) direct airblast loading of soft tissues and lungs, (b) an underwater pressure pulse on submerged portions, and (c) sudden surface motion (wave/jet) that can move animals onto reefs. Direct blast overpressure on tissues — can cause hemorrhage, tissue shear, trauma to lung and middle/inner ear if sufficiently large. Airway/lung coupling — an open blowhole or inhalation path lets the pressure impulse enter the respiratory tract, increasing internal pressure transients. Rapid vertical acceleration / surface jetting — an airburst over or near the water can launch surface waves, jets or water jets that physically displace animals or force them ashore. Startle / behavioral panic — an intense sudden air-noise and shock can trigger strong flight or grouping responses; boats, shallow bathymetry, or confusion can then cause stranding. Combined stressors — simultaneous geomagnetic, visual (bright flash), or social confusion increases probability of maladaptive behaviour. Blowhole & airway: Airblast through an open blowhole can transmit pressure into the lungs and lower airways; rapid positive/negative swings increase barotrauma risk. Middle/inner ear: Sudden pressure transients can damage hearing—even at lower levels—if the pressure waveform is steep and impulsive. Lung/air sac differences: Cetacean lungs and accessory air spaces are structurally different to terrestrial mammals; vulnerability to blast is not identical and is poorly quantified in the literature. Behavioral consequences: An intense airblast when the animal is at the surface is also the most likely context for a strong flight reaction (fast, disorganized movement) which can lead to stranding in shallow water. Hearing injury (TTS/PTS): still probably uncommon except very near a large airburst epicenter. However, surface exposure increases the chance relative to an entirely submerged animal because of direct pressure spikes to airways and ears. Acute barotrauma / lung injury: possible in high-overpressure scenarios (near epicenter; low altitude burst). The exact probability is unknown because cetacean-specific blast-injury thresholds are not well characterized. Behavioral/stranding risk: substantially higher when animals are at the surface because a strong startle + sudden surface motion + proximity to shore/shelf can combine to produce strandings.

Monday, 20 October 2025

Mass stranding in New Zealand

2025, October 15. New Zealand, North Island. Fireball. Time: 20:58NZDT. Seen in Auckland, Bay of Plenty Region, Taranaki Region, Wellington Region. Travelling SW over Tasman Sea.

2025, October 15. New Zealand, North Island, east over sea, Coromandel. Fireball. Time: 12:23NZDT. East Coast of the. Pacific Ocean.

2025, October 20. New Zealand, Northland, Paenga Rehia / Twilight Beach near Te Paki. A mass stranding of 27 pilot whales. They were discovered on Twilight Beach (Paenga Rehia), about 11km south of Cape Rēinga, that is part of the popular Te Paki Coastal Track.

Update and Images to follow.

20251023: Twenty-seven whales died and were buried at location. 

Fourth fireball reported in New Zealand in as many days

2026, July 30. New Zealand, North Island, East Coast of Northland. Fireball. Time: 07:45:03. Duration: 4secs. Travelling SW north of Great B...