Divers descend into the cold waters of Puget Sound searching for a giant Pacific octopus. The rocky seabed is full of strange marine life, and at first the dive seems quiet. Then something moves in ...

Many experts had thought sharks didn’t exist in the frigid waters of Antarctica before this sleeper shark lumbered warily and briefly into the spotlight of a video camera, researcher Alan Jamieson ...

Sleeper sharks live extraordinarily long lives and can thrive in near-freezing ocean temperatures near Earth's poles.

Deep-sea fossils have long fascinated scientists, offering glimpses into the ancient past and revealing the mysteries of prehistoric life. Recent discoveries of shark fossils in deep-sea environments, ...

The deepest known point in any of the world’s oceans is Challenger Deep, a section of the Mariana Trench that plunges to about 36,070 feet (10,994 meters). It’s an extraordinary place on Earth. While ...

While we often wonder what sort of life might be discovered as we explore space, there is still much to be known about our own planet. The deep seas hold a great deal of mystery, and researchers ...

MELBOURNE, Australia (AP) — An ungainly barrel of a shark cruising languidly over a barren seabed far too deep for the sun’s rays to illuminate was an unexpected sight. Many experts had thought sharks ...

Deep-sea researchers capture world-first footage of a sleeper shark in near-freezing Antarctic waters ...