Jonathan the world's oldest tortoise lives a peaceful life on the tropical island of St. Helena with three other giant tortoises.

Often tragically from what has been seen in the past, the main reason great white sharks struggle in aquariums is because ...

Could you tell one fish from another if they were the same species? Likely not, but new research suggests they might be able to tell us apart.

Organisms in the deep sea rely on gravity flows to lay down sediment and then make burrows beneath the seafloor, according to a new study.

Choanoflagellates envelop and digest still smaller cells. Ocean ecosystems depend on these predators to consume plant-like ...

It's spring, the sun is shining and something is about to happen with the plankton in the cold waters of the Arctic Ocean.

The Portuguese man o’ war’s reputation as one of the world’s most feared jellyfish is a complete myth – because it isn’t a ...

The Wallace Line divides species in Southeast Asia. A deep ocean trench prevents animal migration. Even flying birds rarely ...

A first-of-its-kind global assessment has revealed 603 wild animals plus five livestock taxa that do more than just inhabit ...

Scientists have a different idea of the twilight zone. To them, it’s an area of the open ocean where most fish live – depths of 650 to 3,200 feet.

For years, scientific divers at a research station in the Mediterranean Sea had a problem: at some point in every field season, local fish would follow them and steal food intended as experimental ...

Traces of organisms detected in sediments from 7.5 kilometers below the ocean surface reveal how organisms living in the deep sea are engineering their own environments. Analyses of sediment cores ...