The SS Yongala is widely regarded as one of the world's greatest wreck dives. This passenger steamer sank in a cyclone in 1911 and now rests at 14–30 m, completely encrusted with corals and teeming with giant grouper, bull sharks, sea snakes, and manta rays. Strong currents keep the site nutrient-rich and visibility high, but they also demand experience.
The USS Liberty is a US Army cargo ship torpedoed in 1942 and now resting just metres off Tulamben village beach on Bali's northeast coast. Its accessibility — the bow sits at just 5 m and the stern at 30 m — combined with extraordinary marine life including bumphead parrotfish schools at dawn, make it one of the world's most dived wrecks. Night dives reveal sleeping turtles and hunting cuttlefish.
Apo Reef Natural Park is the second-largest contiguous coral reef system in the world and the largest in Asia, located in the Mindoro Strait west of Palawan. The outer reef walls host thresher and hammerhead sharks, schools of bumphead parrotfish, and spectacular wall diving from 5 to 40 m. The park's isolation from intense fishing pressure means fish biomass is dramatically higher than most Philippine reefs.
One of the Maldives' first dive sites to gain international renown, Banana Reef lies just north of Malé and is famous for its curved shape, colourful overhangs, and permanent population of oriental sweetlips and moray eels. Gentle currents make it accessible to divers of most levels, though experienced visitors will appreciate the blue-water pelagics that pass the reef tip. It is a superb introduction to Maldivian reef diving.
Bloody Bay Wall on Little Cayman is one of the Caribbean's most spectacular wall dives, dropping vertically from just 6 m depth to over 1800 m in the Cayman Trench. The wall face is densely covered with black coral trees, sea fans, tube sponges, and barrel sponges, while eagle rays and Nassau grouper cruise the blue water alongside. Crystal-clear visibility averaging 40 m makes this a benchmark for tropical wall diving.
Christmas Point on Similan Island No. 7 is famous for a sloping coral garden that cascades from the surface to 30 m, planted with enormous table corals and staghorn formations. The site is named for a distinctive Christmas-tree-shaped rock that marks the entry point. Leopard sharks rest on sandy patches between boulders, and manta rays visit seasonally during the November to April diving season.
Cirkewwa at Malta's northern tip is an excellent all-conditions training and recreational site built around the wreck of the P29 patrol boat, sunk in 2007, and an older car ferry resting at 18 m. Horse-shoe and arch formations in the limestone provide sheltered habitat for nudibranchs, cuttlefish, and octopus that are among the most photogenic in the Mediterranean. Calm water and easy shore access make it the most dived site on the island.
Colombia Shallows forms the upper section of the Colombia reef complex at the southern end of Cozumel and offers one of the island's most diverse fish experiences in just 8–20 m. Huge aggregations of yellowtail snapper, French angelfish, and spotted moray eels occupy every crevice in the spur-and-groove formations, and the large sandy channels between the spurs are reliable hunting grounds for southern stingray. It is equally popular for snorkelling and recreational diving.
Crystal Bay off the northeast tip of Nusa Penida is the best place on Earth to encounter the rare mola mola (ocean sunfish) between July and October, when these bizarre disc-shaped giants rise from the depths to be cleaned. The site descends sharply past 40 m and cold upwellings that attract the sunfish can drop visibility and temperature rapidly, demanding careful dive planning. The upper reef at 10–18 m is an outstanding coral garden in its own right.
First Cathedral off Lanai island is a dramatic lava tube and cavern system whose domed main chamber is pierced by shafts of light filtering through holes in the rock ceiling, creating a cathedral-like atmosphere at 16 m. Spinner dolphins rest in the calm water near the entrance, and the surrounding reef hosts monk seals, eagle rays, and the endemic Hawaiian cleaner wrasse. The site was extensively surveyed by Dr. Sylvia Earle and remains one of Hawaii's most celebrated dives.
The German Channel is an artificial passage dredged by German phosphate miners in the early 1900s, now famous as one of Palau's most reliable manta ray cleaning stations. Reef mantas glide to the cleaning bommie at 20–24 m while divers rest on the sand and observe from below, and the channel walls on either side host dense gorgonian gardens and resident bumphead parrotfish schools. The site also has excellent macro life including various nudibranch species.
Gladden Spit is the site of one of the ocean's most extraordinary spectacles: each year between March and June, on the nights of the full moon, hundreds of cubera and dog snapper gather to spawn in a feeding frenzy that attracts whale sharks up to 15 m in length. Divers descend to 20–30 m in the blue water and watch the giants filter-feeding on the spawn clouds, an experience that has no equivalent anywhere else in the Caribbean. Only permitted certified divers with licensed guides may dive the site.
The Hilma Hooker is a 71 m cargo vessel that sank in 1984 under mysterious circumstances (large quantities of marijuana were later found in a hidden compartment) and now rests on its starboard side between 18 and 30 m off Bonaire's west coast. The wreck is an exceptionally accessible and photogenic site surrounded by healthy coral gardens and resident turtles, free-swimming moray eels, and schools of grunt. It requires only a short swim from a shore entry.
The USS Kittiwake was a US Navy submarine rescue vessel purposely sunk in 2011 off Seven Mile Beach, Grand Cayman, to create an artificial reef. The 76 m vessel lies on its side in 18–30 m and is already coated in encrusting corals, with resident turtles, snapper, and lion fish in every compartment. Multiple levels and penetration opportunities through engine rooms, decompression chambers, and berthing quarters make it ideal for training dives.
The uninhabited islet of Klein Bonaire sits just a kilometre offshore and its protected waters offer some of the Caribbean's most pristine reef diving. No Name is one of the top sites, with a sloping reef from 5 to 25 m packed with healthy stony corals, sea plumes, and brain corals in near-perfect condition. Sea turtles are almost guaranteed, and the lack of strong current makes it ideal for photography and relaxed exploration.
Located on the southwest coast of Nusa Penida, Manta Point is a shallow cleaning station and feeding area where reef mantas congregate, sometimes in groups of 20 or more. The site is relatively exposed to south-swell and moderate currents so it needs to be dived on the right conditions, but when it is calm the manta encounters at 5–16 m are supremely close-up and extended. Snorkellers and divers share the water here, so awareness is important.
Located on the outer reef of South Malé Atoll, this channel is a renowned manta ray cleaning station where reef mantas gather in impressive numbers to have parasites removed by resident cleaner wrasse. Divers kneel on a sandy ledge at around 12 m and watch mantas pirouette overhead repeatedly, sometimes for 45 minutes. The site is best visited between November and April when the northeast monsoon brings plankton-rich water.
Manta Sandy is a broad sandy plateau near Arborek village in Raja Ampat where oceanic manta rays gather at a cleaning station most mornings. The mantas hover motionless above the sand in just 8–15 m of water, allowing extended, unhurried observation and photography. The surrounding seagrass beds are home to nesting sea turtles and walking epaulette sharks.
Molokini is a partially submerged volcanic crater 4 km off Maui's south coast that forms a natural protected amphitheatre with flat-calm water and visibility regularly exceeding 30 m. The inner crater slopes from 5 to 25 m and is home to white-tip reef sharks, eagle rays, and a remarkable density of Hawaiian reef fish including endemic species found nowhere else on Earth. The outer back wall drops 100 m and is reserved for experienced divers.
Palancar Reef stretches for more than 5 km along Cozumel's southwestern coast and is widely regarded as one of the finest reef systems in the entire Caribbean, recognised as a UNESCO Biosphere Reserve. Palancar Caves is the most spectacular section, featuring a canyon of huge coral pinnacles and swim-throughs at 10–40 m that shelter black grouper, loggerhead turtles, and queen angelfish. The gentle drift current makes navigation effortless and visibility often exceeds 40 m.
Salt Pier's massive wooden and concrete pilings, used to load salt cargo ships, have been transformed over decades into artificial reef structures draped from surface to 9 m with sponges, corals, and enormous aggregations of glassy sweeper fish. Frog fish, seahorses, and rare scorpion fish hide among the encrustations, and the whole structure glows at night with bio-fluorescent organisms. Diving is restricted when ships are loading, requiring advance co-ordination.
Santa Rosa Wall is Cozumel's most thrilling drift dive — an almost vertical wall beginning at 7 m that plunges past 40 m with massive purple sea fans and tube sponges projecting into the blue. The incessant current keeps the water crystal clear and nutrient-rich, and the resident hawksbill turtles are so used to divers that they simply carry on grazing the sponge-covered wall. Eagle rays and black tip sharks appear regularly in the open water off the wall.
Two-Mile Reef at Sodwana Bay is the most dived site on South Africa's iSimangaliso Wetland Park coastline, offering spectacular hard and soft coral gardens just two kilometres offshore. Loggerhead and leatherback turtles are resident year-round, and the warm Mozambique Channel current (24–28 °C) sustains an extraordinary diversity of reef fish rivalling any Indo-Pacific destination. Coelacanths have been photographed in the deep submarine canyons directly behind the reef, making this one of the most biodiverse nearshore dives in Africa.
Southwest Pinnacle is a series of large granite pinnacles at 18–33 m depth that collectively form Koh Tao's second most famous dive. Giant grouper, juvenile whale sharks, and sea turtles are regulars, and the overhangs at 18 m shelter impressive soft coral gardens. Current can be strong and unpredictable, so this is recommended for divers with 20 or more dives.
Tubbataha Reef is a UNESCO World Heritage Site in the middle of the Sulu Sea, reachable only by liveaboard from Puerto Princesa, Palawan. The north atoll wall drops precipitously from the surface to over 100 m and is patrolled by hammerhead sharks, grey reef sharks, and Napoleon wrasse in extraordinary numbers. Conditions demand experience — current, depth, and open-ocean exposure combine on many of the park's best sites.
White Rock is Koh Tao's most popular training and recreational site, consisting of two large submerged granite pinnacles connected by a sandy gully at around 14 m. The site is ideal for Open Water students and night dives alike, with lion fish, moray eels, blue-spotted rays, and frequently visiting hawksbill turtles. Minimal current and good visibility year-round make it a mainstay for local dive schools.