Tropical fish make lousy neighbors as they seek cooler waters and disrupt temperate ecosystems.

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Richard Branson and Guy Harvey set out to witness a grouper spawning off Little Cayman. See what they saw in this 360 video.

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We dived with the expert shark handlers and resident marine biologist at Fiji’s Beqa Lagoon Resort and it was wild— in the best possible way!

A photographer, a kite-surfer and a freediver witness the interaction of a lifetime with killer whales in Norway.

The Crown-of-Thorns Starfish is beautiful but deadly. Is there a way to combat their zombielike invasion before it's too late?

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