Marine Animals
“It’s like swimming inside a snow globe.” When this diver dropped into a remote reef, dozens of huge animals appeared from the darkness
The South Pass, in French Polynesia, is home to the densest population of grey reef sharks on the planet
What the deep-sea robots saw when they went to the darkest depths of our oceans
Explorers drop 6 miles into Japan's deepest abyss, then 29,556 bizarre organisms emerge from the darkness
The crewed submersible visited three underwater trenches during the expedition, reaching depths of 9,775 metres.
Oldest living animal ever found suggests Atlantic Ocean is close to tipping point, say scientists
Quahog clams can live for more than 500 years. A new study of these bivalves reveals what the ocean used to be like – and offers clues of what might happen in the future.
Why the sperm whale's head is built for ramming - and why ramming doesn't give them headaches
Researchers discovered that the sperm whale's head is suited to high-impact clashes.
Night divers capture rare images of fish carrying stinging anemones in their mouths
The incredible photos reveal a new kind of symbiosis between fish and anemones, say researchers.
When an underwater robot was sent to the bottom of a deep-sea canyon, it made an astounding discovery
Researchers in Uruguay have found thriving deep-water coral reefs and dozens of new species.
Spiral tusks, big square heads, strange pink skin: 10 weirdest dolphins and whales on the planet
From unicorn-like narwhals to pink river dolphins and whales with boxy skulls, the ocean is home to some truly bizarre-looking cetaceans.
Drones capture rare killer whales off Washington coast doing something very special
Orca scientists filmed the touching moment Southern Resident killer whales rubbed their bellies together.
When a drone photographer filmed one of the world's most elusive whales, they did something that surprised him
Omura's whales are one of the most elusive baleen whales, only being formally identified in 2003
It is as long as a cricket pitch, weighs a mighty 30 tonnes (that's three-times the weight of a T-rex) and can live for a century
The whale shark is the world's largest shark and fish species, with a maximum age estimated to be 100 years and it's thought they can reach up to 20 metres in length.
Free Willy: When Hollywood’s most famous orca was rescued from captivity he vanished into the ocean – But what happened next?
It looks like a bundled-up sheet of bubble wrap or a weird ball of jelly bubbles and is often found on strandlines – but what on earth is it?
Nazi warheads found off German coast. What's living on them stuns scientists
With the aid of a submersible, researchers found thousands of animals thriving on the abandoned explosives in the Baltic Sea.
What's the strongest material produced by animals?
Animals can produce incredibly strong substances - so who makes the toughest?
“I waited an hour, freezing in the water": Diver spots sharks motionless on seabed. What happened next has never been filmed before
The incredible footage was captured near New Caledonia in the south-west Pacific Ocean.
Baited cameras dropped deep into Caribbean Sea. Then this showed up
The Atlantic six-gill shark was one of four species of shark recorded for the first time off the island of Anguilla in the eastern Caribbean Sea, say researchers.
Never-seen-before BBC footage captures killer whales pretending to drown one of their own in chilling hunting session
The behaviour was filmed for the first time for BBC’s Parenthood after scientists spotted orcas off the coast of Bremer Bay, Western Australia, exhibiting it
Diver has close encounter with 2.5m giant off Vancouver Island
Incredible footage shows the moment a huge wolf eel strikes in British Columbia.
World's 11 deadliest sea creatures: Meet the most dangerous animals in the ocean
Sharks aren’t the only danger in the ocean. Here are our top 10 most deadly sea creatures, from those that sting to those that bite
It might be slow but don't be fooled as this is one of the world's deadliest snipers, causing paralysis, necrosis, coma, respiratory failure and death in humans – lovely...
Deadly yet potentially lifesaving, the venom of cone snails is powerful enough to kill hundreds of people — but could also hold the key to new treatments for diabetes and other diseases.
Odd animal seen 'flying' over seafloor in Caribbean. But that's not the strangest thing it does
Flying gurnards tap the sand as they skim along the bottom of the ocean. Researchers say the unusual behaviour has a vital purpose.
Enormous piles of rotting seaweed mount up on Florida beaches – and they're snaring sea turtle hatchlings
Record amounts of sargassum seaweed washing up on the coast of Florida are making it harder for vulnerable sea turtle hatchlings to reach the ocean, new research finds.
It contains the world’s deadliest snake and one of the only venomous mammals – so why does Australia have so much deadly wildlife?
Is the wildlife really more deadly 'down under'? Helen Pilcher takes a look at why Australia has so many dangerous animals