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Dr Karl Kruszelnicki

@doctorkarl.bsky.social
2.3K followers 8 following 327 posts

Dr Karl Kruszelnicki ~ an answer looking for a question. I do not endorse any commercial products.

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Reposted by Dr Karl Kruszelnicki
Professor Clare Collins AO @profccollins.bsky.social · 04/02/2026
This theconversation.com/what-should-...
theconversation.com
What should you eat after you’ve been on antibiotics? And can probiotics and prebiotics get your gut back to normal?
Antibiotics can destroy the good bacteria in your gut. But some foods can help get it back to normal.
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Dr Karl Kruszelnicki @doctorkarl.bsky.social · 18/01/2026
"Wikipedia: only major platform on which truth emerges through transparent debate, rather than algorithmic opacity or corporate interests. Every edit is logged, every discussion archived -despite AI hallucinations, black-box algorithms and widespread disinformation" www.nature.com/articles/d41...
nature.com
The academic community failed Wikipedia for 25 years — now it might fail us
Artificial-intelligence systems are feeding on Wikipedia without giving back, and academic indifference is threatening the survival of what is arguably the most widely used reference work on the plane...
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Dr Karl Kruszelnicki @doctorkarl.bsky.social · 18/01/2026
" smart windows, most depend on external power, sensors, or control systems, adding cost & complexity. This operates as a passive system, adjusting visible light transmission based on temperature without requiring electricity or electronic components" interestingengineering.com/innovation/t...
interestingengineering.com
Transparent wooden smart window regulates light and blocks 100% UV
Researchers develop transparent wood windows that regulate light, block UV rays, and cut energy use without electricity.
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Dr Karl Kruszelnicki @doctorkarl.bsky.social · 11/01/2026
" insecure/uncomfortable when they don’t know all the answers/don’t grasp that some situations are complex, multidimensional, & puzzling even to experts→ more likely to sign on to conspiracy theory → an easy answer, even if it was wrong, or an oversimplification." futurism.com/health-medic...
futurism.com
Researchers Just Discovered Something Extremely Unflattering About People Who Believe Conspiracy Theories
A group of researchers studied the personality traits most common in conspiracy-brained people, discovering insecurity might be to blame.
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Dr Karl Kruszelnicki @doctorkarl.bsky.social · 11/01/2026
"Ancient scientists understood the importance of deferring to specialists and listening to expert advice. However, they were also keen for their readers to understand where scientists acquire knowledge and how scientific facts can be verified." theconversation.com/5-lessons-ab...
theconversation.com
5 lessons about misinformation from ancient Greek and Roman scientists
Ancient thinkers struggled to tell facts from falsehoods just like we do – and their strategies are still relevant today.
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Dr Karl Kruszelnicki @doctorkarl.bsky.social · 11/01/2026
" rest of the world is still deciding how far and how fast to push. Automakers are lining up fresh metal for 2026, from mass-market crossovers to high-end flagships, and a lot of what’s coming looks directly aimed at buyers in cold, EV-dense markets like Norway." www.autoblog.com/news/norway-...
autoblog.com
Norway Just Reached 96% Electric Car Sales and Gas Is Basically Over
Norway closed 2025 with 96% of new cars fully electric, a record that gave Tesla its best year yet there and turned combustion models into statistical outliers.
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Dr Karl Kruszelnicki @doctorkarl.bsky.social · 10/01/2026
"The most eye-opening discovery: They noticed “robust expression” of genes linked to DNA repair in the retina, “which may help support long-term maintenance of retinal integrity over the Greenland shark’s extreme lifespan.”" nautil.us/how-these-lo...
nautil.us
How These Long-Living Sharks Keep Sharp Vision for Centuries
How These Long-Living Sharks Keep Sharp Vision for Centuries: Understanding their tricks could eventually help preserve people’s eyesight.
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Dr Karl Kruszelnicki @doctorkarl.bsky.social · 10/01/2026
"this new chemical process operates at ambient temperature and pressure. It chemically dissolves the glue holding the blade together. The high-value carbon fiber can be recovered, cleaned, and reused in everything from new turbines to car parts." interestingengineering.com/energy/china...
interestingengineering.com
Ming Yang unveils world’s first fully recyclable wind turbine blade
Chinese energy giant Ming Yang Smart Energy has developed the “world’s first fully recyclable carbon fiber wind turbine blade.”
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Dr Karl Kruszelnicki @doctorkarl.bsky.social · 10/01/2026
"some dogs have a skill that puts them functionally on par with 18-month-old children:They can learn the names of new toys not only through direct instruction but also by eavesdropping on the conversations of their owners." www.nytimes.com/2026/01/08/s...
nytimes.com
Dogs Build Their Vocabularies Like Toddlers
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Dr Karl Kruszelnicki @doctorkarl.bsky.social · 09/01/2026
"Fossils of a human ancestor from 773,000 years ago may be near the base of the Homo sapiens lineage, representing a common ancestor of modern humans, Neandertals and Denisovans" www.scientificamerican.com/article/foss...
scientificamerican.com
Meet the Ancestor That Connects Us to Neandertals and Denisovans
Fossils of a human ancestor from 773,000 years ago may be near the base of the Homo sapiens lineage, representing a common ancestor of modern humans, Neandertals and Denisovans
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Dr Karl Kruszelnicki @doctorkarl.bsky.social · 09/01/2026
"evidence for hundreds of these quakes in Antarctica between 2010 and 2023, mostly at the ocean end of the Thwaites Glacier – the so-called Doomsday Glacier that could send sea levels rising rapidly if it were to collapse" www.scientificamerican.com/article/anta...
scientificamerican.com
Antarctica Doomsday Glacier Rattled by Hundreds of Iceberg Earthquakes
Capsizing icebergs are violently clashing with the crumbling end of the Doomsday Glacier
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Reposted by Dr Karl Kruszelnicki
Professor Clare Collins AO @profccollins.bsky.social · 04/01/2026
Thinking of trying a detox? Here’s what you need to know first theconversation.com/thinking-of-...
theconversation.com
Thinking of trying a detox? Here’s what you need to know first
There are a number of ways to ‘detox’. But do they work? And are they safe?
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Dr Karl Kruszelnicki @doctorkarl.bsky.social · 22/12/2025
"But there were some P waves that should not have been there if the center of the Earth had only a liquid core. Lehmann concluded that the most likely explanation was that the P waves had encountered an even more dense, superheated inner core." www.nytimes.com/2025/12/20/o...
nytimes.com
Overlooked No More: Inge Lehmann, Who Discovered the Earth’s Inner Core
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Dr Karl Kruszelnicki @doctorkarl.bsky.social · 20/12/2025
"This year, renewables surpassed coal as a source of electricity worldwide, and solar and wind energy grew fast enough to cover the entire increase in global electricity use from January to June" www.science.org/content/arti...
science.org
Science’s 2025 Breakthrough of the Year: The unstoppable rise of renewable energy
Clean energy infrastructure is being deployed with unmatched scale and speed—and China is leading the way
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Dr Karl Kruszelnicki @doctorkarl.bsky.social · 13/12/2025
"First, how many microbes does a single fly typically carry? And second, how many microbes does it take to get people sick?" www.the-scientist.com/what-happens...
the-scientist.com
What Happens When a Fly Lands on Your Food?
Flies carrying disease-causing microbes will likely contaminate the food they touch, but different factors determine whether the person who eats it will get sick.
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Dr Karl Kruszelnicki @doctorkarl.bsky.social · 06/12/2025
Almost Dangerous "Commercial aircraft — 40,000 feet (12 kilometers) — radiation briefly rose. Such radiation levels for more than 12 hours→pregnant women exceed officially considered as safe for a fetus. In this case, the worst was over in about 2 hours" www.space.com/astronomy/su...
space.com
Rare solar flare caused radiation in Earth's atmosphere to spike to highest levels in nearly 20 years, researchers say
Radiation levels at airline flight altitudes briefly reached levels that could be potentially harmful to pregnant women.
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Dr Karl Kruszelnicki @doctorkarl.bsky.social · 06/12/2025
"Google once the primary source of informal medical advice, people now turn to social networks (29%) & artificial intelligence (AI) chatbots (40%). Social media posts are often subjective, anecdotal, and in some cases tied to commercial interests." www.medscape.com/viewarticle/...
medscape.com
Wildest Myths Patients Still Bring Into the Exam Room
Clinicians say debunking misinformation in the exam room consumes valuable consultation time and often requires delicate, empathetic communication.
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Dr Karl Kruszelnicki @doctorkarl.bsky.social · 06/12/2025
"peanut butter to its most basic components, this creamy treat packs peanuts rich in protein and fat as well as, in many varieties, added sugar. These three macronutrients each contribute to possible biological drivers for dogs’ peanut butter preferences." www.the-scientist.com/why-do-dogs-...
the-scientist.com
Why Do Dogs Love Peanut Butter?
The reason dogs beg, sit, stay, and shake for peanut butter could be both evolutionarily wired and learned behavior.
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Dr Karl Kruszelnicki @doctorkarl.bsky.social · 06/12/2025
"Studies in mice → pigment used in tattoos accumulates in the lymph nodes & might affect immune responses. Ink remained in the lymph nodes for months &varying effects: it weakened animals’ response to a COVID vaccine but increased reaction to an influenza vaccine." www.pnas.org/doi/10.1073/...
pnas.org
Tattoo ink induces inflammation in the draining lymph node and alters the immune response to vaccination | PNAS
Despite safety concerns regarding the toxicity of tattoo ink, no studies have reported the consequences of tattooing on the immune response. In thi...
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Dr Karl Kruszelnicki @doctorkarl.bsky.social · 06/12/2025
"The Black Death (single most deadly documented pandemic in human history) in 1347 C.E., eliminated more than half Europe’s population. Researcher→cool weather spurred by previously unidentified volcanic eruptions set into motion a deadly chain of events." www.science.org/content/arti...
science.org
Medieval volcano may have indirectly sparked Europe’s Black Death
Crop failures caused by eruptions possibly forced grain imports from plague-ridden regions
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Dr Karl Kruszelnicki @doctorkarl.bsky.social · 22/11/2025
"An mRNA based flu vaccine is 34.5% more effective against influenza-like illness compared to current flu vaccines. The study included over 18,000 people, half of whom were given the mRNA vaccine and half of whom were given a conventional flu vaccine." www.scimex.org/newsfeed/exp...
scimex.org
EXPERT REACTION: mRNA flu vaccine is up to 34.5% more effective than c
EXPERT REACTION: mRNA flu vaccine is up to 34.5% more effective than current flu vaccines An mRNA based flu vaccine, which has been developed by Pfizer, is 34.5% more effective against inf
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Dr Karl Kruszelnicki @doctorkarl.bsky.social · 22/11/2025
"Centrifugal motion. Perpetual bliss. The thrill of the moment. Unstoppable. In technical terms, it is “non-agonistic interaction involving directed, intraspecific, oral-oral contact with some movement of the lips/mouthparts and no food transfer.”" www.nytimes.com/2025/11/19/s...
nytimes.com
Kissing Has Existed for at Least 16 Million Years, Scientists Say
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Dr Karl Kruszelnicki @doctorkarl.bsky.social · 22/11/2025
"“This object is a comet. It looks and behaves like a comet.” NASA officials presented a series of images taken by the fleet of spacecraft, including the Mars Reconnaissance Orbiter, the Lucy mission, and the Solar and Heliospheric Observatory." www.nytimes.com/2025/11/19/s...
nytimes.com
NASA Releases Images of Comet 3I/ATLAS: It ‘Doesn’t Look Like a Spacecraft’
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Dr Karl Kruszelnicki @doctorkarl.bsky.social · 20/11/2025
" first death linked to a severe meat allergy caused by a tick bite. The man, who died in 2024 after eating a burger, had alpha-gal syndrome, a disease triggered by tick bites→ develop anaphylactic reactions to red meat and other animal-based products." www.scientificamerican.com/article/man-...
scientificamerican.com
Man With Tick-Borne Meat Allergy Dies after Eating Burger
Lone star tick bites are the most common cause of alpha-gal syndrome, which causes severe allergic reactions to red meat
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Dr Karl Kruszelnicki @doctorkarl.bsky.social · 20/11/2025
"Canada has lost its measles-free status following a year of ongoing measles transmission. The Americas became the first region in the world to be declared free of the disease in 2016, following a 22-year regional campaign." www.scientificamerican.com/article/cana...
scientificamerican.com
The Americas Are No Longer Officially Measles-Free
Canada lost its official measles elimination status after a year of continuous transmission
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Reposted by Dr Karl Kruszelnicki
Professor Clare Collins AO @profccollins.bsky.social · 28/10/2025
Do food marketers target #children? What can we do about it? I talk with Jane Martin from Food for Health Alliance for #NutritionScienceBites podcast @nmnteatwell.bsky.social @hmriaustralia.bsky.social 📺 youtu.be/dAcHzj5zKr8 🎧 shorturl.at/MJ0tk
youtu.be
Do food marketers target children? What can we do about it? Listen - we said 'brands off our kids'!
YouTube video by Nutrition Science Bites
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Reposted by Dr Karl Kruszelnicki
Children's Medical Research Institute @cmri.bsky.social · 29/10/2025
Our very own Professor Leszek Lisowski was chosen to star on Dr Karl Kruszelnicki podcast Shirtloads of Science to talk about his extraordinary work with viral vectors. Learn more about his lab at CMRI by listening here: www.youtube.com/watch?v=10e2VcSmIRA
Two people seated at a table in front of a colorful background featuring the text “Shirtloads of Science” in bold yellow letters and “Dr Karl” in white in the top corner. One person is wearing a patterned shirt, and the other is in a dark blazer with a light shirt.
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Reposted by Dr Karl Kruszelnicki
Professor Clare Collins AO @profccollins.bsky.social · 23/09/2025
One more 😴 till I catch up with @abcaustralia.bsky.social #ScienceHour on #TripleJ with @doctorkarl.bsky.social and Lucy Smith! Get your #Nutrition #Science questions ready!
media.tenor.com
a woman is holding a cell phone in her hands and says `` wait til i tell you this '' .
ALT: a woman is holding a cell phone in her hands and says `` wait til i tell you this '' .
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Reposted by Dr Karl Kruszelnicki
Michael E. Mann @michaelemann.bsky.social · 16/09/2025
"Science Under Siege with Prof. Michael Mann & Prof. Peter Hotez" | @peterhotezmdphd.bsky.social & I discussed our new book #ScienceUnderSiege with the great @doctorkarl.bsky.social on the #ShirtloadsOfScience podcast: shirtloadsofscience.libsyn.com/science-unde...
shirtloadsofscience.libsyn.com
Shirtloads of Science: Science Under Siege with Prof. Michael Mann & Prof. Peter Hotez (443)
In this episode, we sit down with two of today’s most prominent defenders of science: Professor Michael Mann, world-renowned climate scientist, and Professor Peter Hotez, vaccine researcher and advoca...
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Dr Karl Kruszelnicki @doctorkarl.bsky.social · 29/08/2025
"Pseudoscience Red Flags 1. Unfalsifiable Claims. 2. Reversing the Burden of Proof 3. Special Pleading (Explaining Away Negative Findings) 4. Cherry-Picking Data 5. Misusing Science Jargon 6. Overconfidence and Absolute Language and so on ..." www.psychologytoday.com/au/blog/crit...
psychologytoday.com
A Simple Guide to Spotting Pseudoscience
Learn what pseudoscience is, why it’s persuasive, and how to recognize it so that you can stay open-minded without being misled.
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Reposted by Dr Karl Kruszelnicki
Comrade Weez @weezmgk.bsky.social · 13/08/2025
Can an AI chatbot of @doctorkarl.bsky.social change climate sceptics’ minds? He’s willing to give it a try www.theguardian.com/technology/2...
theguardian.com
Can an AI chatbot of Dr Karl change climate sceptics’ minds? He’s willing to give it a try
The famous science communicator is planning to release a chatbot designed to answer questions about the climate crisis. Can it work?
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Dr Karl Kruszelnicki @doctorkarl.bsky.social · 10/08/2025
"the man's bromide level was eventually measured at a whopping 1,700 mg/L, while the "reference range" for healthy people is 0.9 to 7.3 mg/L. ... a terrifying psychosis and kept in the hospital for 3 full weeks over an entirely preventable condition." arstechnica.com/health/2025/...
arstechnica.com
After using ChatGPT, man swaps his salt for sodium bromide—and suffers psychosis
Literal “hallucinations” were the result.
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Dr Karl Kruszelnicki @doctorkarl.bsky.social · 10/08/2025
"the wolves are said to be distinct from robot combat dogs, according to a previous release. While the agile and lightweight robot dogs specialize in reconnaissance, these robot wolves are specifically meant for combat." futurism.com/china-armed-...
futurism.com
China Shows Off Armed Attack Robots
The Chinese state broadcasting group recently released footage of its newly developed "robot wolves" in simulated combat drills.
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Dr Karl Kruszelnicki @doctorkarl.bsky.social · 10/08/2025
"OpenAI burns through $2.50 for every dollar it brings in. OpenAI — 6 years on — won't reach a positive cash flow until 2029 at the earliest. Microsoft — backing OpenAI — expect to spend upwards of $400 billion to keep the AI dream alive in 2025 alone." futurism.com/ai-industry-...
futurism.com
AI Industry Nervous About Small Detail: They're Not Making Any Real Money
The AI industry is struggling to make a dent in its expenditures, as the vast majority of users remain content to use its free model.
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Dr Karl Kruszelnicki @doctorkarl.bsky.social · 10/08/2025
"For decades the UK has sought a solution to the nuclear waste its fleet of submarines generates. After decades of fruitless search there are “ongoing discussions” but still no place for radioactive waste to be permanently stored. Similarly, in the US..." www.theguardian.com/world/2025/a...
theguardian.com
The lethal legacy of Aukus nuclear submarines will remain for millennia – and there’s no plan to deal with it
Australia’s future nuclear submarines will produce highly radioactive waste, and allies in the UK and the US still don’t have a safe place to store their own
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Dr Karl Kruszelnicki @doctorkarl.bsky.social · 29/07/2025
" nearly 100 wind farms operating on Australia’s main grid set a new peak of 10.16 gigawatts (GW). Battery storage hit a new peak of 2,045 megawatts (2 GW) in the evening peak at 5.55pm on June 20." reneweconomy.com.au/wind-output-...
reneweconomy.com.au
Wind output smashes through 10 GW barrier for first time on Australia’s main grid
Wind and big batteries pass significant milestones on Australia’s main grid, and new output records also set for wind in South Australia and wind and solar in Queensland.
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Dr Karl Kruszelnicki @doctorkarl.bsky.social · 29/07/2025
"there is growing evidence that more intuitive visualizations, informed by psychological research, can help people make better sense of climate data." thebulletin.org/2025/07/how-...
thebulletin.org
How clear and simple data visualizations bring the climate crisis home
Climate change is a slow-moving disaster. We need graphics that capture both its pace and its impact.
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Dr Karl Kruszelnicki @doctorkarl.bsky.social · 29/07/2025
"France currently has a nuclear weapons stockpile of approximately 290 warheads. In addition, approximately 80 retired warheads are awaiting dismantlement, giving a total inventory of approximately 370 nuclear warheads." thebulletin.org/premium/2025...
thebulletin.org
French nuclear weapons, 2025
France’s nuclear weapons arsenal has remained stable in recent years at approximately 290 warheads, but the country is modernizing its ballistic missiles, cruise missiles, submarines, aircraft, and nu...
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Dr Karl Kruszelnicki @doctorkarl.bsky.social · 28/07/2025
" long-term exposure to wood-heater smoke causes 729 premature deaths every year in Australia, which is more than the deaths attributable to emissions from the national fleet of 20 million vehicles, or from energy generation, or even bushfires." www.abc.net.au/news/science...
abc.net.au
Wood heater smoke is a silent killer but one city tops the list
Wood heaters are estimated to be responsible for more pollution-related deaths than all the cars on our roads. This national map shows which areas are affected the most.
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Dr Karl Kruszelnicki @doctorkarl.bsky.social · 20/07/2025
"Most beaches have a natural defense against rising seas: The sandy area simply moves landward. Geologists call it coastal squeeze. “Are you going to save the beach house, or do you want to save the beach?” “Because you cannot save them both.”" www.nytimes.com/2025/07/19/c...
nytimes.com
An Ancient Law Could Shape the Modern Future of America’s Beaches. Here’s How.
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Dr Karl Kruszelnicki @doctorkarl.bsky.social · 16/07/2025
"rotor diameter of 262 metres, 68 million kWh of clean electricity each year – = 40,000 households – the turbine blades, will have a swept area of 53,000 square metres. The playing surface of the Melbourne Cricket Ground (MCG) ~ 20,000 square metres." reneweconomy.com.au/worlds-most-...
reneweconomy.com.au
World's most powerful floating offshore wind turbine rolls off production line in China | RenewEconomy
Two Chinese state-owned companies have produced the world’s most powerful direct-drive floating offshore wind turbine, ready for real-world testing.
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Dr Karl Kruszelnicki @doctorkarl.bsky.social · 15/07/2025
" regulation of facial hair in France had its roots in the era of colonialist expansion/Industrial Revolution. Less wealthy people had acquired more access to what had traditionally been luxury goods, so the elite turned to something money couldn’t buy " www.atlasobscura.com/articles/fre...
atlasobscura.com
In 1907, Parisian Waiters Went on Strike for the Right to Grow Mustaches
You gotta fight for your right to whiskers.
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Dr Karl Kruszelnicki @doctorkarl.bsky.social · 15/07/2025
"Solar power generated more electricity than any other source in the EU last month. New data shows that solar accounted for 22.1 % of the EU’s electricity mix in June 2025, narrowly overtaking nuclear – and, notably, far outpacing fossil fuels." www.euronews.com/green/2025/0...
euronews.com
Solar becomes EU’s largest electricity source for the first time
The Netherlands and Greece were the top solar record setters, while wind power also hit new highs in May and June.
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Dr Karl Kruszelnicki @doctorkarl.bsky.social · 13/07/2025
"increases in extreme temperatures due to climate change varied 2-4 degrees Celsius, making a huge difference in how the heat is experienced and,... nearly tripling the estimated number of excess deaths across the 12 cities in the recent heatwave." www.statista.com/chart/34783/...
statista.com
Infographic: Climate Change Tripled Heat Deaths in European Heatwave
This chart shows the estimated number of excess heat-related deaths in the June/July 2025 European heatwave and the impact of climate change on excess deaths.
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Dr Karl Kruszelnicki @doctorkarl.bsky.social · 10/07/2025
"BEVs produce 73% less life-cycle greenhouse gas emissions than equivalent gasoline-powered counterpart – factoring in production of vehicle. Using renewable electricity to charge a BEV, car’s life-cycle emissions fell 78 % lower than ICE vehicles." thedriven.io/2025/07/09/e...
thedriven.io
EVs are already 73 pct cleaner than ICE vehicles, and getting cleaner faster than thought
Full battery EVs are 73 pct cleaner than internal combustion cars, and even more so when powered only with renewables. The benefits of hybrids are much lower.
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Dr Karl Kruszelnicki @doctorkarl.bsky.social · 10/07/2025
"A study in the journal Nature estimates the volume of nanoplastics, which are even smaller than microplastics and invisible to the naked eye, to be at least 27 million metric tons in North Atlantic seas — more than the weight of all wild land mammals." www.nytimes.com/2025/07/09/c...
nytimes.com
Tons of Invisible Plastic Pieces Lurk in Ocean Water
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Dr Karl Kruszelnicki @doctorkarl.bsky.social · 10/07/2025
"East Asia’s rainy season has traditionally run from middle of June -July, when a stationary weather front brings prolonged rainfall to the region. But annual rains have become less predictable since the late 1990s, ... climate change is a major factor." www.nytimes.com/2025/07/09/w...
nytimes.com
Umbrellas Optional? East Asia’s Monsoon Rains Are No Longer a Sure Thing
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Dr Karl Kruszelnicki @doctorkarl.bsky.social · 10/07/2025
" a team of scientists analyzed the mist from popular vapes and found such high levels of heavy metals that one researcher thought their machine had malfunctioned. Other studies have suggested that vaping can affect the heart, lungs and brain." www.nytimes.com/2025/07/09/w...
nytimes.com
Just How Harmful Is Vaping? More Evidence Is Emerging.
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Dr Karl Kruszelnicki @doctorkarl.bsky.social · 10/07/2025
"1954-2022 for the world to install a terawatt of solar power; the second terawatt in 2024, and the third will arrive either late 2025/early 2026 We now install a gigawatt’s worth of solar panels (~ one coal-fired plant), every fifteen hours." www.newyorker.com/news/annals-...
newyorker.com
4.6 Billion Years On, the Sun Is Having a Moment
In the past two years, without much notice, solar power has begun to truly transform the world’s energy system.
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Dr Karl Kruszelnicki @doctorkarl.bsky.social · 06/07/2025
"tonic immobility is triggered when the animal is turned upside down – it stops moving, its muscles relax, and it enters a trance-like state. Some scientists even use tonic immobility as a technique to safely handle certain shark species." theconversation.com/sharks-freez...
theconversation.com
Sharks freeze when you turn them upside down – and there’s no good reason why
Rather than a clever survival tactic, tonic immobility might just be ‘evolutionary baggage’.
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