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Watch as this hungry sea turtle snacks on a jellyfish, slurping its tentacles like spaghetti.

Draped in a vibrant mix of soft corals and sponges, patrolled by an array of pelagic predators, home to some fish species found nowhere else on earth, and the resting place of world-class wrecks, the reefs and pinnacles of the Red Sea are the stuff of legend.

Why did UNESCO choose Cocos Island National Park as a World Heritage Site? It is the only island in the tropical eastern Pacific, and it provides critical marine habitats — deep waters pumped with nutrients from life-giving currents — for large pelagic fish, including the planet’s biggest — the whale shark — as well as schools of hammerhead sharks, yellowfin tuna and manta rays.

New wrecks have been sunk for divers to explore in the Bahamas, Bermuda and the Mid-Atlantic U.S.

Before it disappears again — and this time, for good — nine tourists will visit the *Titanic* for the price of a first-class ticket on the 1912 voyage of the famously “unsinkable” ship.

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A short film by This Is Alabama shows an underwater forest that’s been preserved for 50,000 years.

Nudibranchs can be some of the tiniest and most elusive sea creatures, but our entrants did an awesome job capturing them in phenomenal ways.

Storms keep getting stronger. Their aftermath gets worse. But the question stays the same: Why aren’t we prepared?

You surface and the boat is nowhere in sight — using these tips to pair natural navigation with basic compass skills will get you where you need to go.

How a WWII steamship loaded with supplies for British troops was turned into an undersea time capsule — and one of the most-dived wrecks in the world.

Good news coming out of the Florida Keys this week: The Keys are set to reopen to divers on Oct. 1.

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