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From a ballet of whitetip reef sharks to a male cardinal fish releasing freshly-hatched babies from its mouth, these winning underwater photos are a revelation of our oceans’ wonders. "Synchronicity," ...

A deep-sea expedition has recorded 30 previously unknown species from one of the planet’s most inaccessible regions, at depths of up to 700 meters, or 2,300 feet, in the Southern Ocean. The ...

Roughly 2 million species live in the world’s ocean. But scientists have only described a mere 10% of them. With extinctions on the rise and biodiversity threatened worldwide, many species are in ...