An amazing photo gallery of whale sharks — the biggest fish in the sea — from around the world.

Two freedivers jump in the water to help save an entangled sea turtle. You won't want to miss what happens next.

Have you ever heard of a mantis shrimp? Watch as comedian Ze Frank narrates this True Facts video on mantis shrimp.

Breaking ground in underwater research: A female squid weighing over 700 pounds was recently found near Antarctica, take a look!

Moon jellyfish drift en masse between surface and reef. Read about one diver’s secret spot in Jupiter, Florida, where you’ll find moon jellyfish galore.

Are you ready for the cuteness overload? Check out these 19 amazing images of fish eggs, whale calves, baby sea turtles, juvenile sharks and more!

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California’s seldom-visited sites north of San Francisco harbor unique kelp kingdoms and other amazing underwater dive experiences.

Of the nearly 700 photos submitted in 2013's Through Your Lens Underwater Photo Contest, _Scuba Diving_ received some great turtle photos. Come check out our readers' best images!