Stunning video from Nat Geo: When tide and current turn a tiny bay into a bowl of plankton, manta rays in the Maldives gather for a roiling, whirling feast.

These human-assisted habitats act like defibrillation paddles, revving up struggling reefs and reviving declining fish populations from Florida to Indonesia and beyond.

Peter Hughes knows a thing or two about live-aboards, and he has a spot in the DEMA Hall of Fame to prove it. In 2011, Hughes received the DEMA Reaching Out Award for helping to evolve the live-aboard diving industry over the past three decades. That same year, after spending more than 25 years building his former live-aboard company, Peter Hughes Diving, Inc., the 40-year scuba diving veteran threw all of his expertise and energy into a new live-aboard venture, the DivEncounters Alliance

Based on the opinions of thousands of divers from across the globe, our annual Top 100 Readers Choice Awards showcase the best scuba diving in the world.

Scuba Dive Asia is offering special early-bird discounts to 125 of the planet's best dive destinations — and the dive travel deal is only available to readers of Scuba Diving Magazine.

The company’s six live-aboards in Southeast Asia will provide two different PADI rebreather scuba courses using the Poseidon MKVI.

Want to dive with really big animals? These 10 destinations feature the superstars of ocean animals: sharks, dolphins, whale sharks, sea lions and manta rays.

At last… A worldwide Alliance of like minded individuals who own & operate luxury live-aboard dive vessels in the world’s most highly sought after dive destinations - The DivEncounters Alliance has arrived!

Augusta, GA -- Aggressor and Dancer Fleet, in partnership with Scuba Schools International, are pleased to announce that the SSI Advanced Adventurer Certification is now available FREE OF CHARGE to all guests traveling on a Dancer Fleet or Aggressor Fleet cruise.