In the open ocean, a manta ray's path can seem deliberate, until, without warning, it slips beneath the surface and vanishes into the blue. Hours or days later, it reappears far from where it began.

“Going up in space is relatively easy compared to going deep into the ocean,” said Sylvia Earle, 90, an oceanographer and ...

COLUMBIA, S.C. (WIS) - The surface of the Earth is about two-thirds water, but how much of the world’s deep seas do you think we’ve explored? Dr. Katy Croff Bell founded the Ocean Discovery League and ...

Dumbo octopuses, like the Opisthoteuthis agassizii seen here during a 2019 dive, are the deepest-living group of octopuses known. NOAA Office of Ocean Exploration and Research, 2019 Southeastern U.S.