It's always a thrill to dive with large schools of fish. Check out Judy G's gallery of schooling fish from Mexico, Thailand, Fiji, Costa Rica and Indonesia.

Oceanographer Carrie Manfrino works in Little Cayman Island to protect and grow coral reefs. For that, she is a Scuba Diving Sea Hero.

Want to keep up with great white sharks from your smartphone? You can!

Think you know all about underwater creatures? Watch as comedian Ze Frank narrates this True Facts video on Cuttlefish.