Scientists find a deep-sea coral ecosystem over 100 years old, raising urgent concerns about bottom trawling in the South Pacific.

Reaching over 30 feet long, the mysterious giant oarfish is the real-life "sea serpent" behind centuries of myths and legends ...

Deep down in the sea, where no light penetrates and where the availability of food is very low, life somehow exists in ways that can be considered str.

Over the long and complicated course of evolutionary history, mammals independently turned towards water to make a home multiple times. While many of the warm-blooded animals that abandoned dry land ...

Find out what fossils have revealed about ichthyosaurs, which included the biggest marine reptile that ever lived.

A mysterious deep-sea squid filmed 4.1 km below the Pacific can disguise itself as the ocean floor, raising new questions about hidden marine life and what we still don’t know.

Viewing volcanoes, snorkeling with manta rays, taking ghost tours and more are Hawaii experiences best enjoyed after dark.

A newly identified sponge order, Vilesida, produces sterols linked to the oldest-known animal biomarkers, supporting the idea ...

Ancient microbial activity preserved in wrinkled seafloor sediments challenges assumptions about where traces of early life can survive.

From bone-eating snot-flowers to snowboarding scale worms, when a whale dies it becomes a colossal island of nutrients – attracting weird and wonderful creatures to feast.