Ted Judah went diving off McAbee Beach in Monterey Bay when he caught sight of a 'silvery knife blade undulating thing,' ...

This article originally published at 'Mass die off': Thousands of rare sea creatures wash up on Texas coast.

Thousands and thousands' of these curious creatures have been showing up on the Texas shoreline, expert says. What are they?

A 2003 marine heat wave in the waters around Greenland continues to impact North Atlantic ocean ecosystems decades on, with a ...

Fears are brewing over an oil-price shock that could rattle markets and the economy Americans urged to exercise caution in ...

Scientists from the California Academy of Sciences described 72 new species last year, from elegant birds to strange sea ...

Photographers see some amazing things under the sea. Greenland's prime minister says 'we choose Denmark' over the US These ...

The blue whale is the largest animal known to have ever lived, reaching lengths of nearly 100 feet and weighing more than 300 ...

Few have explored the ocean’s deepest depths – but those rare few have shared images of the strangest, most mysterious ...

Explore the fascinating and lethal world of ocean brine pools, known as 'lakes of death,' which harbor unique ecosystems and ...

Some animals do not have red blood like humans. From spiders to octopuses, their copper-rich blue blood helps them survive ...

For a long time, the idea of giant animals has mostly been tied to dinosaurs on land. Oceans feel different, quieter, even ...