Marine Animals
Scientists drop microphones to Arctic seabed, then 4m-long animals with huge tusks appear
We thought eavesdropping on animals didn't annoy them... until these strange-looking creatures started hitting underwater recording devices.
33-metre, 180-tonne monster tops 'biggest animals in the ocean' list – and makes the great white shark look tiny
From the gigantic blue whale to a coral colony so large it can be seen from space, here are some of the most enormous organisms living in the ocean
Drones spent 8 years flying over Massachusetts waters. What they found could help save one of Earth's biggest animals
The drones' mission was to collect the breath of critically endangered North Atlantic right whales in Cape Cod Bay.
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Researchers tag 8 pilot whales in Hawai'i then follow them into the darkness. What they find is "unbelievable"
For the first time, scientists have quantified how many deep-sea squid short-finned pilot whales in Hawaiʻi need to eat to support their deep-diving lifestyle.
Purple is nature's rarest colour but purple animals do exist: Meet 9 beautiful, incredible purple animals that look like they've been painted
Are these the world's best, most outrageous, moustaches? 8 animals with a better facial fuzz than yours
Check out these brilliantly bristly animals that use their moustaches and beards for all manner of tasks, from foraging for food on dark ocean floors to spreading scent to attract mates
How does sound affect whales and dolphins?
The underwater world is noisier than it has ever been and it's affecting whales and dolphins...
“I've been thinking about this possibility for 15 years": Killer whale experts make new discovery off North American coast
New research has revealed that West Coast transient killer whales – found from south-eastern Alaska to southern California – are two distinct communities that rarely encounter each other.
Why do whales have blowholes?
Why is a blowhole on the top of a whale's head and what does their exhaled breath smell like?
It's as sleek as a torpedo, as long as a bus, and weighs the same as an elephant: Discover the ocean creature that slices through our waters at 35 km/h
Our guide to the minke whale, the UK's most frequently spotted whale
Deep-sea scientists filmed something astonishing and very rarely seen swimming over the seafloor in Chile
Extraordinary footage of a mother squid carrying her eggs
Green lights found in 385m-deep sea cave in Japan. They've never been seen before
The animal responsible for the bioluminescence is new to science, say researchers.
What is a Portuguese man of war? This is why they aren't jellyfish...
Well, it's not a jellyfish, for starters ...
Scientists unearthed an ancient jawed fish in western Mongolia – and it upended everything they knew about shark evolution
The partial fossil convinced researchers that an ancestor of sharks evolved a bony skeleton – then lost it
Large cluster of 15-metre, 30-tonne “hungry giants” filmed exploding out of the ocean in Alaska
A whale watcher enjoyed a surprisingly close encounter when a pod of feeding humpback whales surfaced right next to his boat.
Orcas filmed paralysing and eating great white sharks in the Gulf of California
Warmer waters might be bringing more juvenile white sharks to the Gulf of California, where they are easy prey for killer whales, say researchers.
Prehistoric-looking creature seen at bottom of sunken crater in Pacific Ocean
The strange animal was filmed during a research expedition in Vanuatu in the South Pacific Ocean.
Ancient animal filmed slithering over the seafloor near Komodo island
Captured by a night diver in Indonesia, footage shows the creature swimming slowly through the darkness.
Gigantic iceberg breaks free in Antarctica, revealing ghostly mega-nest beneath
Made up of more than 1,000 strange dimples, researchers say the nesting grounds are something they've never been seen before.
Watch heart-stopping footage of rescuers racing to save a sea lion being strangled by plastic before it's too late...
Rescuers saved a sea lion that had become tightly entangled in plastic packaging
Diver drops into Caribbean Sea at night, then tentacled animal rises from depths with unusual things inside it
The surprising sight was filmed on a night dive off the Mexican island of Cozumel.
Hundreds of dolphins are dying young – and scientists say the signs are alarming...
Population growth of common dolphins in the Bay of Biscay has slowed
10 greatest wildlife spectacles on the planet: Where and when Mother Nature puts on her biggest and most spectacular shows
Our top 10 of the largest concentrations of animals on Earth.
Sharks have a deadly secret sixth sense — and it’s more terrifying than you think
The surprisingly lethal way sharks can find and hunt their prey