Showing posts with label Marine Science. Show all posts
Showing posts with label Marine Science. Show all posts

Saturday, 1 August 2026

Dolphins dead in Uruguay

2026 July 22 (July 17 to date). Uruguay. Cluster stranding of 12 Fraser's dolphins. Working Group on Marine Fauna Strandings (GTV) has verified 12 registered strandings of Fraser's dolphins. These occurred in the towns of San Luis (2, with one returned to sea), Colonia del Sacramento (2), Punta del Este (2), Playa Verde (1), Barra del Chuy (3), Oceanía del Polonio (1) and Cabo Polonio (1). Preliminary results from autopsies performed on 3 of the dolphins indicate a possible link to Cetacean Morbillivirus– a highly contagious virus among whales and dolphins that can cause immunosuppression, pneumonia, and encephalitis. However, this is still a preliminary diagnosis and requires further confirmation.

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).

Pod of dolphin's re-strand in Western Australia

2026, July 21. Western Australia, Princess Royal Harbour, Albany Waterfront Marina, Anzac Peace Park. A mass stranding of approximately 12 pantropical spotted dolphins. The pod stranded at Albany Waterfront Marina on Tuesday. Over the next 24 hours, 11 died. Initial Stranding (Tuesday). One dolphin died and was removed. The remaining 11 were refloated by members of the public and returned to deeper water. Second Stranding (Wednesday morning): 10 dolphins re-stranded overnight. Seven died on the beach. The remaining three were humanely euthanised following veterinary advice.

Update 20260723: I checked meteor data over multiple sites and haven't found anything other than normal background incidents. 

Tuesday, 21 July 2026

Belugas mass strand in Huson Bay

2026, July 20. Canada, Hudson Bay, Manitoba, near Churchill. A mass stranding of 7 belugas whales. A pod of three females and four calves trapped in a shallow, isolated pool about 50 metres from tide line. Birds had already injured the whales. Gulls were pecking at the stranded belugas, causing minor injuries. Officers used bear bangers to scare the birds away and prevent further harm. Risk of polar bears: Blood from the injuries posed a serious risk of attracting polar bears. RCMP officers were called to help keep watch and keep people away. The whales were too large to move manually, so officers stayed with them for nearly two hours, splashing water on them every 20–30 minutes and keeping watch for predators. Successful return to the bay: As the tide returned, water reconnected with the pool, forming a stream. The belugas immediately swam toward the exit point and safely to open water.

Manitoba Conservation Officers Association/Facebook)  

Western Australia mass dolphin stranding

2026, July 21. Western Australia, Princess Royal Harbour, Albany Waterfront Marina, Anzac Peace Park. A mass stranding of approximately a dozen dolphins occurred in shallow mud flats. All but one were refloated after a response involving public intervention. 

Will update later if significant information becomes available when I check meteor detection sites. It's too early to suggest a reason why; it could be bird flu, a simple navigation error or something else

There was an unrelated large meteor event in northwestern Australia on the 17th.

2026, July 17. Western Australia, Pilbara region, Gibson Desert, North Karlamilyi National Park/Telfer Township. Large Fireball/Meteor Airburst/Possible Meteorite Fall. Overland. Witness Location and Report: GPS co-ordinates exact; -23.1206183, 123.0419572, CSR WELL 22 - Historical landmark. DMS: 23°07'14.2"S 123°02'31.1"E. Georgia bore camp on canning stock route, few kms nearby. Sonic Boom heard approx 2mins later, heard rumble and distant boom. Colour: Blue, Light Blue. Direction: Travelling west. Time: 07:00 AWST. 23:00 UT Gibson Desert, NW Australia. Duration: ≈7.5s

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, 21 May 2026

Fireball over Tasman Sea, east of Sydney, Australia

2026, May 21. Tasman Sea, New South Wales, approximately 300km east of Sydney. Fireball. Time: 6:34pm. Seen east coast all the way from Newcastle, Forster in the north to Tumut in the south and as far west as Narromine, Yass, Jugiong, Perisher, Minmi and Canberra. Seen NW at Upper Bingara. Witnesses reported seeing a large green fireball with orange tail streak across the night sky and light up the clouds. Sound: No infrasound detection with only one report of concurrent detection.

Thursday, 7 May 2026

David Attenborough

North Atlantic Meteor Airburst

2026, May 7. North Atlantic, Central. Airburst. Time: 05:52:03. Coordinates: 32.5N, 36.8W. Altitude: 36.0km. Velocity Components: vx = -1.8, vy = 24.1, vz = -5.4. True Velocity: 24.76 km/s. The angle of entry is approximately 12.6°. Energy: e = 6.4e10, -e = 0.2 or 200,000 kg/TNT. This is the tenth airburst recorded by NASA this year. This event is highly consistent with the Taurid meteoroid complex. While many major showers like the Eta Aquariids (active now in May) are "fast" showers (66 km/s), the Taurids are famously "slow" meteors, typically entering the atmosphere at speeds between 27 and 30 km/s. A recorded velocity of ~25 km/s strongly aligns with this stream's profile.

Friday, 1 May 2026

Regional Shift in Meteor Activity and Marine Impact

Last season, meteor activity along the North Atlantic coastline of the US and Canada was nearly a weekly occurrence. This year, however, the pattern has shifted dramatically; the East Coast has seen reports plummet to almost nothing, while the Pacific Northwest and central overland regions are now "under fire." This "all quiet on the eastern front" atmosphere has created a surprisingly stable environment for the North Atlantic Right Whale to breed. Conversely, the western front has become the new hotspot, leaving the Gray whale in the direct line of fire. As of today, there is no sign of the meteor activity in the west letting up. However, since the Pacific/Mexico region was hit particularly hard last year, there is hope that whales successfully migrating south will find the reprieve they need to breed in peace.

The Good News: 

The critically endangered North Atlantic right whale population has recorded 23 calves this season — the best breeding result since 2009 — offering cautious optimism but not a reversal of the species’ precarious status. 23 calves were documented between November and April. This is the highest number in 16 years (since 2009). Researchers emphasize that while encouraging, calf survival to adulthood remains uncertain. Only ~380 North Atlantic right whales remain globally. About 70 are reproductively active females, according to NOAA Fisheries. A healthy female typically calves every 3–4 years, but some had been showing 10-year gaps. This season, 18 mothers had calves within the last six years, suggesting improved health or conditions. Aerial survey teams from Florida, Georgia, and the Carolinas monitored calving grounds. By spring, 18 of the 23 mother–calf pairs were observed in Massachusetts waters, especially Cape Cod Bay. Three first-time mothers, including two only 10 years old. Two older females (40+ years) each have produced nine or more calves in their lifetimes.

Wednesday, 29 April 2026

Fireball over British Columbia

2026, April 29. Canada, British Columbia, Greater Victoria region. Fireball. Seen in OR and WA over 160 km from the event. Time: around 07:11UT, 12:12 a.m. LT. Travelling SW over the coast. Meteor was approximately a metre wide, flying over Port Alberni west towards Bamfield before landing in the Pacific Ocean. A second meteor was also caught on camera around 1:30 a.m.

Washington Gray whale Strandings and Meteors

2026, February 21. Fireball.

2026, March 2. Gray whale.

2026, March 3. Airburst. Sonic Boom.

2026, March 21. Gray whale.

2026, March 23. Pacific/Canada, Airburst.

2026, March 23. Fireball.

2026, March 28. Fireball. Sonic Boom.

2026, March 28. Gray whale.

2026, April 1. Gulf of Alaska. Airburst.

2026, April. The Cluster - 13 Gray whales.

2026, April 29. Fireball.

Tuesday, 28 April 2026

Fireball seen as orca rescue underway in Uruguay

2026, April 26. Uruguay, Playa Mansa, Punta del Este. An orca(killer whale) calf stranded on a beach. After failed rescue attempts, the whale was euthanised. A team continued efforts to save the animal under difficult weather conditions. The animal had stayed close to the shore, showing signs of weakness.

2026, April 27. Uruguay, Playa Mansa. Fireball. Time: around 01:54 UT or 22:51LT. The event was recorded by security cameras and widely observed in Argentina and Uruguay. Duration 6+ seconds. Fragmented over Maldonado. No reports of sonic boom. Seen in Punta del Este, Buenos Aires Province, Ciudad Autónoma de Buenos Aires, Maldonado Department, Provincia de Buenos Aires, Santa Fe. This is the first report of a fireball in Uruguay this year.  


Also: New Zealand, North Island. It had a flurry of activity on the 26th, 27th and 28th across the North Island. One meteor detected on camera was over 10 seconds in duration, low and slow. Overall, about half a dozen were detected over water on both sides of the Island down to Cook Strait, with three stretching over a region of sky south of Auckland (Pacific/Tasman Sea). No NASA airbursts or AMS were logged or reported within the time frame, so it's a wait-and-see scenario. The atmosphere (globally) has been quiet, with the risk of a mass stranding (as I see it) regarded as low. Spyhopping whales on the 24th is a strong indicator that something is annoying them, but hopefully, like the past Chatham Island whales, they will settle. Just a reminder, if meteors are being picked up on camera of a night that restricted time frame allows for added objects not detected during daylight hours so the flux could be much higher than observed.

Saturday, 25 April 2026

Second Fireball in the Mediterranean

2026, April 24. Mediterranean, Between Corsica and Sardinia. Fireball. Time: around 22:00CEST, 19:56 UT. Travelling south. Seen from Spain, France and Italy.

Previous: April 24. Ligurian Sea. Fireball. Time: 00:44CEST. Located between the coastal border region of France, Italy and Corsica. Travelling WSW. Duration: 4 seconds. Seen in Italy, France, Spain, Switzerland and Germany.

Ligurian Sea (Pelagos Sanctuary): No major mass strandings have been reported in the 48 hours since the April 24 fireballs. However, this is the most densely populated area for Fin whales and Striped dolphins in the Mediterranean. Local networks (like CIMA Research Foundation and Italy’s CERT) are currently in "high-monitoring" mode due to the spring migratory peak.

Corsica/Sardinia Corridor: The second fireball noted (22:00 CEST) passed directly over the Strait of Bonifacio. This area is a known habitat for Cuvier's beaked whales, which are deep-divers suggests are particularly susceptible to the atmospheric pressure changes or acoustic "thumps" of airbursts. No reports of sonic booms were witnessed from the events above; therefore, the likelihood of a mass stranding is low. 

Marine Animal Disturbance Alert: A 14-day advisory is now in effect for this region. All local residents and visitors should maintain a safe distance from marine life and report any unusual animal behavior or strandings to the relevant authorities immediately.

Saturday, 11 April 2026

The bad-tempered whales of 2018

In 2018, Humpback Whales in the breeding ground off the west coast of Réunion Island in the Indian Ocean exhibited a high rate of agonistic behaviour. Video recordings and social media posts showed signs of aggressive characteristics during whale watching tours/towards swimmers and also recreational fishing ventures. The whales were in the region from late June until mid-October 2018.

Below is a time frame of meteor and whale strandings in the region during 2018. It should be noted that in the Northern Hemisphere, t the same time, they were dealing with a similar situation between August/September. Scotland/Ireland. In one month August/September more whales washed ashore than in the previous 10 years. This had followed a meteor airburst in the Celtic Sea. Further deaths were seen in the Netherlands and Sweden.

2018, January 6. Southern Ocean, southwest of South Africa. Airburst. Time: 18:24:27. Coordinates: (39.5S;12.8E). Altitude: 26.0km. Energy: e = 3.3e10, -e = 0.11 or 111,000 kg/TNT.

2018, April 19. Indian Ocean, east of the Reunion and Mauritius Islands. Airburst. Time: 13:39:39. Coordinates: (22.2S;72.6E). Altitude: 31.5km. Velocity: (-5.9;-9.1;1.4). Energy: e = 48e10, -e = 1.2 or 1,200,000 kg/TNT.

2018, June 2. Botswana, watering hole called Motopi Pan. Meteor Impact / Fireball. Detected before coming into Earths atmosphere by the Catalina Sky Survey. Estimated to be 2-3 meters in diameter. The meteorites were recovered near a. Energy: The impact kinetic energy was approximately 0.2 kt to 0.5 kt (200,000 to 500,000 kg of TNT). The disruption occurred roughly over the coordinates 21.2°S, 23.3°E. Infrasound: It was detected by the CTBTO infrasound station I47 in South Africa, proving that even a 2-meter rock generates significant low-frequency pressure waves that travel through the environment.

2018 June 7. South Africa, Cape Town, Muizenberg Beach. A mass stranding of a pod of 12 false killer whales stranded at rescue efforts were undertaken, but not all survived.

2018, July 11. Mauritius: Pygmy Cachalot. Location: Near the reefs of Mauritius. Event: A Pygmy Sperm Whale (Kogia breviceps) was found in a state of extreme panic and disorientation. Behavior: Local rescuers noted the whale was releasing "ink" (a stress response) and was highly disoriented.

2018, July 27. Madagascar southwestern, Benenitra. Meteorite Impact/ Airburst. Sonic boom.

2018, August - September. Namibia: Humpback Spike "delayed arrival". Location: Walvis Bay and surrounding coastline. Event: A series of Humpback whale carcasses were discovered throughout August and early September 2018. Condition: Much like the Donegal whales in Northern Hemisphere, these were described by local conservationists (Working Abroad/Namibian Dolphin Project) as "deflated" and "rotting," indicating they had died weeks earlier.

2018, September 25. South of Madagascar, Indian Ocean. Airburst. Coordinates: (34.3S, 44.9E). Energy: e = 5.45, -e = 0.1

2018, September 25. Airburst. Reunion and Mauritius Islands, Indian Ocean. Coordinates: (23.5S, 56.8E). Energy: e = 80.8e10, -e = 1.9 or 1,900,000 kg/TNT. Altitude: 33 km. Velocity: (-16.2, 2.8, 0.6).

2018, October 7. St. Helena Bay, South Africa. Location: St Helena Bay, Western Cape. Event: A female Killer Whale (Orca) stranded in poor condition while her pod remained nearby in visible distress. Scientific Note: Necropsies found internal lesions. This pod's "distress" and the female's internal trauma occurred just two weeks after the September 25 double-airburst (1.9 kt total) in the Indian Ocean.

2018, November 19. Mozambique, near Inhambane. A mass stranding of a small pod of pilot whales stranded. Local authorities and marine conservation groups worked to rescue and refloat the whales, with mixed success.

2018, December 12. Plettenberg Bay, South Africa. Location: Robberg Beach. Event: A juvenile Killer Whale beached itself. Rescuers successfully refloated it, but the appearance of a juvenile orca alone is considered a high-stress indicator for the pod.

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.  

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.

Saturday, 21 March 2026

Dolphins and birds die on Black Sea coast after meteor

2026, March 11. Black Sea. Fireball. Seen in Turkey (Ankara, Samsun, Gaziantep, Trabzon), Russia (Rostov Oblast). Time: around 19:35 UT or 22:35 LT. Extremely vivid green color. Travelling WNW basically in the center of the Black Sea. This was a large meteor event, not a long duration, however in was seen in locations over 1000km apart.

2026, March 15. Turkey, across Uşak Province. Earth Grazing Fireball. A slow-moving luminous object crossing the night sky for more than 20 seconds. Rare event. Videos recorded by witnesses show a bright white to bluish-green object with a compact head and a narrow glowing tail moving across the sky at a shallow angle before fading from view. The long visible duration and smooth motion distinguish the event from typical meteors, which usually last only a few seconds. Earth-grazing meteors enter the atmosphere at a shallow trajectory and travel hundreds of kilometers through the upper atmosphere before exiting again into space or continuing along a long atmospheric path. Because they remain at high altitude, they can remain visible for 10 to 40 seconds, significantly longer than most meteors.  

2026, March 18. Bulgaria, Black Sea. Shabla Tuzla. Nine bottlenose dolphins and over 300 Mediterranean petrels have been found dead in the Northern Black Sea region - from Shabla Tuzla to Durankulak. The birds tested negative for bird influenza.

Wednesday, 18 March 2026

The 2011 Falkland Islands mass stranding events and the South Atlantic Meteor Airburst

In March 2011, the International Monitoring System (IMS) and the SuperDARN radar in the Falkland Islands recorded significant activity in the upper atmosphere. Acoustic Coupling: Data from the Falkland Islands SuperDARN radar (52° S, 59° W) recorded intense "meteor wind" activity in the upper mesosphere during early 2011. This radar is designed to detect the ionized trails of meteors; in the weeks leading up to March 12 stranding below, it showed a high density of these trails over the South Atlantic. Infrasonic "Triggers": Bolides like the March 1 event (See The Big Event below) generate infrasound (sound below 20 Hz) that can travel thousands of kilometers through the AtmoSOFAR channel. This specific frequency range is known to be detectable by cetaceans and has been theorized to cause disorientation or acoustic trauma. Regional Stations: While the Falkland Islands lack a dense seismic network, stations in the South Sandwich Islands and South Georgia recorded "sporadic" low-frequency signals in early March 2011 that did not match standard tectonic earthquake profiles, suggesting atmospheric sources (airbursts).

The Big Event: Large Meteor Airburst. Date/Time: March 1, 2011, approximately 21:00 – 22:00 UTC. Approximate Coordinates: 30.4°S 25.5°W. Location Description: Mid-South Atlantic, roughly midway between the coast of South America and the Tristan da Cunha archipelago. Altitude of Airburst: Estimated between 30 km and 45 km. Energy Release: Calculated at approximately 0.5 to 1.1 kilotons, or 500,000 to 1,100,000 kg/TNT equivalent.

The Strandings: 2011, March 12. Falkland Islands, Speedwell Island (a remote, uninhabited island to the southwest of East Falkland). A mass stranding of an estimated 400 Long-finned pilot whales (Globicephala melas). They counted twice and both times the number was the same. A local sheep farmer, Christopher May, found the pod. He estimated they had been dead for approximately 10 days before he discovered them, which places the actual stranding date around March 2, 2011. Unusually, many of the whales were found dead and "floating" in the shallows rather than just high on the beach, which often indicates they died in the water. The pod included massive adults (20–25 feet) and very small calves (5 feet), confirming it was a complete social unit (a "nursery" or "maternity" pod). Because the island is uninhabited and has no natural land predators, the carcasses remained largely intact, though thousands of giant petrels eventually descended on the site. The unexpected feast provided food for them for several months.

2011, March (Discovered Late March). Falkland Islands, Elephant Beach, East Falkland. A mass stranding of approximately 110 long-finned pilot whales. Connection: This occurred simultaneously with the record-breaking Speedwell Island stranding above just a few miles away. The whale carcasses were estimated to be "3–4 weeks old" when found in late March places their distress signal exactly at the time of that large South Atlantic meteor airburst.

Image: Chris May  

Meteor airburst in Fiji archipelago

2026, August 1. Pacific Ocean, 200km SW of Fiji. Low-energy meteor Airburst. Time: 17:43UT. Altitude: 45km. Energy: e = 2.9e10, -e = 0.1 or...