Black Rock is a deep wall dive for advanced divers, named for the large bushes of black coral that grow on the wall. It's a beautiful and dramatic site, with the wall dropping off into the deep blue.

Black Rock is a deep wall dive for advanced divers, named for the large bushes of black coral that grow on the wall. It's a beautiful and dramatic site, with the wall dropping off into the deep blue.

Black Rock is a deep wall dive for advanced divers, named for the large bushes of black coral that grow on the wall. It's a beautiful and dramatic site, with the wall dropping off into the deep blue.

Black Rock in Tubbataha's South Atoll is a long wall dive known for its high concentration of marine life. It's an excellent spot for seeing sharks, turtles, and massive schools of snappers and sweetlips, particularly at the prominent corners.

Black Rock, in the Kawe region, is another excellent manta ray cleaning station in Raja Ampat. The dark, volcanic rock pinnacle is surrounded by sand and attracts numerous manta rays that come to be cleaned by the resident wrasse.

Black water diving is a unique experience where divers drift in the open ocean at night, suspended over deep water. Lights are used to attract bizarre and rarely seen pelagic and larval creatures that migrate towards the surface in darkness.

The Blackett Strait is historically famous as the location where John F. Kennedy's PT-109 patrol boat was sunk. The strait itself offers excellent muck diving on its dark sand slopes, with a chance to find historical artifacts.

Blade is one of Wakatobi's most spectacular and unique sites. It's a long, thin ridge of rock that rises from the deep, with a series of smaller pinnacles on top, resembling the edge of a serrated knife. It's a dramatic and visually stunning dive.

Another fantastic WWII aircraft wreck, the Bristol Blenheim bomber lies in deep water off the coast. The wreck is largely intact, with its wings and engines still in place. A beautiful and poignant deep technical dive.

Bligh Water is a vast expanse of sea in Fiji, known for its remote and pristine diving, accessible mainly by liveaboard. It features incredible underwater pinnacles like 'E-6' and 'Mount Mutiny', which are covered in healthy corals and swarming with fish.

The Churchill Barriers are causeways built during WWII, using sunken ships as foundations. Several of these blockship wrecks are now fantastic and very shallow shore dives, perfect for all levels and even for snorkeling.

Bloody Bay Wall is the crown jewel of Little Cayman diving. It is a breathtakingly sheer vertical wall that starts in shallow water and plummets into the abyss. The wall is decorated with a stunning array of colorful sponges, sea fans, and pristine corals.

Blue Bay is a protected marine park with some of the most beautiful and pristine hard coral gardens in Mauritius. The shallow depth and calm waters make it a paradise for snorkelers and a great spot for easy introductory dives.

Blue Corner is a legendary dive site where currents converge, bringing in a staggering amount of marine life. Divers use reef hooks to anchor themselves to the plateau edge and watch the show as sharks, jacks, and barracudas swarm in the current.

Not to be confused with the site in Palau, Blue Corner at Nusa Lembongan is a thrilling, advanced drift dive. The corner of the reef is exposed to powerful currents, including down-currents, but it's one of the best places to spot Mola mola in season.

The Blue Grotto on Biševo island is a world-famous natural wonder. On sunny days, sunlight enters through an underwater opening, reflecting off the white seabed and filling the entire cave with an ethereal, brilliant blue light.

Blue Heron Bridge is considered one of the best dive sites in the world for macro life. This shallow shore dive under a bridge is a treasure trove of rare and unusual critters, including frogfish, seahorses, and batfish. A must-do for photographers.

Blue Heron Bridge is considered one of the best dive sites in the world for macro life. This shallow shore dive under a bridge is a treasure trove of rare and unusual critters, including frogfish, seahorses, and batfish. A must-do for photographers.

The Blue Hole of Dahab is an infamous and iconic dive site. It is a submarine sinkhole that drops to over 100 meters deep. While the deep 'Arch' is for technical divers only, the shallow reef around the edge is stunning and accessible to all.

The Blue Lagoon is a shallow, protected sandy lagoon with beautiful coral gardens on its fringes. Its calm, clear water makes it a perfect spot for beginner divers, freedivers, and snorkelers to enjoy the Red Sea.

Blue Magic is a submerged pinnacle in the Dampier Strait that truly lives up to its name. Strong currents attract a huge amount of life, including schooling barracuda, jacks, Spanish mackerel, and regular sightings of Oceanic Manta Rays.

The Blue Wall is San Andrés' most famous dive site. It's a spectacular vertical wall that starts in the shallows and plummets into the deep blue abyss. The wall is covered in colorful sponges and offers a real sense of flying.

Boca Chica is a large, protected bay with very calm and easy diving conditions. It's a great place for beginners and features several small, intentionally sunk wrecks that have become nice artificial reefs.