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 didn’t exist in the frigid ...

Satellites have captured incredible views of the Feb. 17 annular solar eclipse as the moon's shadow swept across a remote ...

Half of Earth’s oceans are more than 3.2km deep. Beneath them lie cavernous plains untouched by sunlight, vast gaping trenches made by Earth’s tectonic plates shifting, and ranges of underwater ...

A sleeper shark appeared on camera for the first time at more than 1,500 feet beneath the Antarctic Ocean’s surface, exceeding depths experts thought sharks could exist in that part of the world.