Marine Animals
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 off Washington coast
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?
Diver finds colossal animal skeleton off Australian coast. We know what killed it
The gigantic creature was discovered on the seabed in a remote part of Western Australia.
When researchers tracked 24 giant manta rays into the deep, they discovered an amazing new behaviour
Scientists now think that oceanic manta rays dive hundreds of metres below the surface to get their bearings.
Disoriented dolphins are stranding more often – and scientists say a disturbing cause is emerging
Toxins from harmful algae can cause Alzheimer’s-like symptoms, such as disorientation, in dolphins
Giant deep-sea beasts aren’t just the stuff of legend – here’s how they got so massive
Ever wondered why deep-sea animals are larger than those found nearer to the surface? Ben Hoare dives into theories of gigantism
“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.