The 2021 *Scuba Diving* Readers Choice Awards rank the world's best scuba diving operators, resorts and liveaboards.

The wreck of this German sub offer scuba divers a place to come face to face with World War II history. Learn how this U-boat met its fate.

Underwater videographer Jonathon Di Cecco takes you deep into this Mexican cenote. See its magic through the eyes of a cave diver.

See what it's like to scuba dive with four gigantic whale sharks off the Derawan Islands in Indonesia in this video.

Take a virtual tour of the SS Thistlegorm shipwreck in the Red Sea with The Thistlegorm Project's amazing 360 video and 3D images.

A prehistoric wonder, with fossil beds dating back 33 million years, Devil’s Den is a great place to experience diving in inland Florida.

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.