Coral Reefs

Low-light algae living in coral have evolved a never-before-seen way to capture energy.

The 2,300-square-mile reef was hiding in plain sight.

A blob of a coral has been caught violently pulsating, with tentacles wriggling every which way, as it ejects its algal residents in a time-lapse video of the phenomenon called bleaching.

Getting peed on is a good thing, at least for coral reefs, scientists have found.

Scientists are glimpsing how microscopic marine creatures move through their underwater environment and interact with each other in the ocean.

Thanks to an underwater microscope and computer interface that can be operated by a diver, researchers are glimpsing activity of coral polyps up close and in unprecedented detail.

A global shark census is underway. What have scientists discovered thus far?

An Airbus jet was sunk to draw ocean flora and fauna, and thus divers and tourists.

A massive reef system lurking in the mouth of the Amazon River hides a hidden menagerie of strange and wonderful underwater creatures.

Not all coral reefs emerge from naturally occurring objects on the sea bottom.