Leopard sharks (sometimes called zebra sharks) are an exciting sight in Indonesian waters – and this one had a rare genetic condition.

Named after the kittiwake gull, the ship was commissioned in 1946 as a submarine rescue vessel.  It is now an artificial reef.

The sharks were filmed at Mikomoto Island, a small uninhabited isle just 15-minutes by boat from Japan's Izu Peninsula.

160 billion tonnes of seawater rush in and out of this bay twice a day, reaching such intense speeds that it sounds like a train

The unusually pattern marine creature was seen in Raja Ampat, Indonesia.

Omura’s whales are filter feeders that snack on enormous mouthfuls of tiny krill.

This adorable deep-sea animal’s ear flaps make it look like a famous Disney character

Oyster reefs could add around $12 trillion to global economies if they were better managed and protected, new study finds.

In the 1970s, this conservation project seemed like a great idea. Decades later, it’s caused untold damage

When an undersea volcano erupted in the Pacific Ocean, it created a vast raft of floating rock

A diver in Moalboal, Philippines, saw something very odd – and it had the internet worried for a moment.

Despite their risks, these natural marvels can be a boon for marine life as they stir up the nutrients so there is lots of food for animals

Ocean sunfish, or mola mola, have no tail fin. Instead, they steer with a thick rudder-like fringe called a clavus, which gives them their unusual appearance.

Marine mammal experts responded to the unusual sighting and tried to encourage the pod back to the safety of deeper seas.

Puffins spend the entire winter out at sea – but visitors to their breeding colonies can watch their adorable antics during spring and summer.

An outbreak in fur seals in South Africa is the first documented case of it spreading among marine mammals.

A female humpback whale may have spent days with her stillborn calf. This rare sighting may suggest that baleen whales experience grief.

High-speed imaging has helped scientists better understand how baby oysters feed, but what they’ve found could be a problem for future oyster populations.

Wildlife watchers visited the Scottish Hebrides to see what marine life can be found in waters where whales used to be hunted. They witnessed one of the largest minke whale aggregations ever recorded in the region.

Some sink by accident – during wars or rough seas – while others are sent to the seafloor on purpose: a process known as scuttling.