Trawlers off southern India caught a deep-sea creature with a regrown tail later identified by scientists as a new species, a study said. Getty Images/iStockphoto Hundreds of feet down in the Arabian ...

Whatever may be the driving force, killer whales’ use of tools is a remarkable discovery, especially when few animal species ...

Earth's vast oceanic biodiversity remains largely unexplored, with only a fraction of an estimated two million total living marine species formally named and described. A significant challenge is the ...

Blue blood may look alien, but it’s one of evolution’s most elegant solutions to life in extreme environments. Here’s how ...

Thousands of meters below the ocean's surface lurk some gigantic creatures, much larger than their shallow-water brethren. Scientists have a few hunches for why this happens, but the debate continues.