The ocean may be nature’s single greatest gift to humanity. It provides about half of the oxygen we breathe, feeds billions ...

Some of the most colorful sea animals that live beneath the waves are bright, beautiful ... and deadly A rainbow underwater ...

Cleaner fish shape coral reef health by affecting where and how microbes spread. Removing them changed fish behavior.

Marine ecologist Malin Pinsky explains how record-breaking ocean warming is driving unprecedented shifts in marine life, ...

Massive sea urchin populations are destroying Hawaii's coral reefs faster than they can naturally rebuild themselves.