Marine Animals

Marine Animals

Giant titan triggerfish, biggest coral reef trigger fish, (Balistoides viridescens). Red Sea, Egypt

It has human-like, sharp chisel teeth and a powerful bite. Divers are advised to swim away, as making for the surface only encourages an attack…

Here's everything you need to know about the titan triggerfish
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Bigfin squid

“I screamed before the rest of it came into the screen.” Deep-sea scientists film rare creature deep in Pacific Ocean

The elusive animal was filmed swimming near an underwater mountain off the coast of California
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Po hospital ship

In 1941, a massive WWII ship sank off the coast of Albania. Divers just went down there – and found a rare mammal living among the wreck

This 135m-long wartime shipwreck has become an artificial reef, home to groupers, wrasse, lionfish and critically endangered Mediterranean monk seals.
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Vampire squid

See the chilling moment this vampire squid turns itself inside out

As if this body inversion manoeuvre wasn't surreal enough, the ‘vampire squid from hell’ also exudes a cloak of bioluminescent mucous from its crimson body to help deter predators.
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Sharon Stuart/Getty Images

"Even amongst their fellow apex predators, they are still top of the food chain…" 7 animals so formidable they have virtually no predators

While most animals that have no predators are what we call ‘apex predators’, meaning they are right at the top of the food chain, this is not always the case.
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Port Jackson shark

Divers hid a camera in a lobster den. What happened next shocked them all

Scientists in Australia were surprised to see Port Jackson and crested horn sharks appear out of the darkness.
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Scripps Pier underwater camera

Camera dropped under San Diego pier, then this scuttled over the lens

Ocean lovers can watch the world unfold below the waves from wherever they are via the Scripps Pier underwater camera.
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Alexander Gruhl, CC BY-SA 4.0 via Wikimedia Commons

It looks like spaghetti, doesn’t have a gut or mouth – and has been feeding on bioplastics for millions of years

Long before we invented biodegradable plastic, nature had its own version.
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Gerald Corsi/Getty Images

No one lives on this remote Russian island – but it does have a mysterious graveyard of gigantic, 600-year-old whale bones

Located off the coast of the Russian Far East, Yttygran Island is home to a mysterious graveyard.
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Walruses surround boat in Svalbard

“As if they were showing off their tusks." Herd of walruses surrounds small tourist boat in the Arctic

With no one else around, these Arctic tourists got a close-up view of a lively group of walruses.
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Close-up underwater photograph of a red scorpionfish resting on the seabed against a black background, holding a smaller fish crosswise in its mouth.

Astonishing image of scorpionfish devouring prey whole among Ocean Photographer of the Year 2026 finalists

Delve into the hidden worlds of our oceans with the 2026 finalists.
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Narwhals with tusks swimming in North West Greenland. Credit: Carsten Egevang

“That puzzled us quite a bit.” Scientists found another astonishing thing about narwhals after X-raying their tusks

The narwhal tusk is one of the more unique structures in the animal kingdom.
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Only a few of the ostracods in the amber piece could be studied using light microscopy, like this individual of the new species Myanmarcypris hui. Its antennae extend from the bivalved shell. Most other specimens lie too deep in the amber or the view is obstructed by debris particles. © He Wang and Xiangdong Zhao

"100 million years ago creatures living in a coastal lagoon, fringed by trees, had just had a sexual encounter when they would be entombed forever"

The astonishing 2020 discovery, found fossilised in amber in Myanmar, was hailed as a ‘spectacular find’ by scientists.
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Tunatura/ Getty Images

It looks like coral and behaves like coral, but touch it and you’ll get a nasty, burning sting that can last for hours

Fire coral has astounded scientists because of how it grows. Here's why
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Giant Pacific octopus

This ocean titan has 9 brains, hunts sharks at night and can grow as long as a school bus

The largest specimen ever found reportedly measured 9.75m long and weighed 272kg. Here's everything you need to know about the giant Pacific octopus.
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Yellow-morph green turtle, Chelonia mydas, in the Galápagos Islands

A group of sea turtles were tagged in the Galápagos. When experts looked at the data, they noticed something odd

Satellite tags reveal ‘homebody’ nature of some Galápagos sea turtles.
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An octopus rests on the seafloor 1150 meters deep, in the Bellingshausen Sea off Antarctica

When a colossal iceberg broke free in Antarctica, scientists found something astounding beneath it

With the help of a remotely operated vehicle, the researchers discovered a breathtaking world hidden under the ice for centuries.
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Giant isopod

It looks like a woodlouse, but is the size of a pet cat and has an impressive 14 legs – and can take on a shark if desperate…

Nick Baker takes a look at the super-sized crustacean that lives in the deepest, darkest ocean: the giant isopod
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Bobbit worm

It's a terrifying, ruthless, 3-metre long, deep-sea predator that can slice its prey in half – and its venom can cause permanent numbness in humans

The Bobbit worm is a fearsome marine predator that burrows into the sand and waits for unsuspecting prey. Stuart Blackman explains all you need to know about this terrifying marine worm
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Researchers tagging narwhals

Scientists tag 6 ‘unicorns of the sea’ and follow them 1,500m into the deep – to places humans can’t go

Narwhals recorded Arctic ocean data which will be used to help inform climate research in the region
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False catshark

Large animal with cat-like eyes filmed at bottom of Caribbean Sea

The false catshark, which can grow up to 3m long, was one of many remarkable species observed during a recent expedition to explore the waters around the island nation of Trinidad and Tobago.
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blue-ringed octopus

"It can fit in the palm of your hand, could kill you in minutes with a venom a thousand times stronger than cyanide – and there's no antidote"

Discover all you need to know about one of the world's deadliest animals
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Scorpaena escorpora scorpionfish

“It causes excruciating ‘whole-body’ pain that lasts for weeks in humans.” 9 dangerous animals armed with deadly venomous spines

From pus-filled stab wounds to paralysis and cardiac arrest, it’s best to steer clear of some of the world’s most venomous spined creatures
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Common dolphin caught in midair while breaching

Why don't whales and dolphins suffer from the bends like humans do?

John Arnott takes a look at why cetaceans don't suffer from the bends
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