For centuries, sailors have reported the eerie glow of "milky seas" — vast areas of ocean that shine at night like a soft ...

Phoebe Beltran, 15, was swimming off the coast of Long Beach, California, when she was unexpectedly bitten by a sea lion ...

The Mesozoic Era extinctions formed the world as we know it today. Read about what caused them and which animals survived.

A toxic algae bloom in southern California has sickened dozens of animals, causing them to have seizures and act erratically.

Phytoplankton are crucial because they form the base of the aquatic food web and produce oxygen through photosynthesis. This plant life helps the oceans generate 50% of the world’s oxygen, absorb 25% ...