Marine Animals
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?
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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
Heaviest jellyfish on Earth filmed in British Columbia
The lion's mane jellyfish has an estimated maximum weight of more than 1,000kg. This videographer found one on a night dive in the Salish Sea.
“Talk about a once in a lifetime experience.” See amazing moment 8 massive whales surprise divers on the Great Barrier Reef
Night diver has "shock of lifetime" as immense animal swims out of darkness in Australia
While trying to capture a male weedy seadragon protecting his eggs, this photographer was surprised when an enormous creature appeared behind it.
“One of the ocean’s best kept secrets”: adorable pygmy seahorse filmed hiding in coral reef
A diver in the Philippines caught a rare glimpse of a pygmy seahorse sheltering among the coral.
‘Tusked’ animal found living at bottom of 5,000m-deep ocean. It was carrying something strange
Scientists say it's the first time this behaviour has ever been seen.
They're one of the largest animals to have ever lived on Earth – so why do these ocean giants eat such tiny animals?
Despite being some of the largest animals in the ocean (and Earth), whales feast on miniature animals – why?