Cenote Dos Ojos ('Two Eyes') is one of the world's longest surveyed underwater cave systems, where visibility exceeds 80 metres in the halocline zone. Light fil...

Playa del Carmen delivers an absurd variety of diving within a short radius: cenote caverns with otherworldly light beams, bull shark encounters from November t...

Jacques Cousteau declared Sipadan 'an untouched piece of art,' and the island's vertical walls dropping 2,000 feet remain among diving's most iconic experiences...

Palau's underwater realm is a greatest-hits compilation of diving experiences: the legendary Blue Corner wall with its shark-filled currents, the ethereal Jelly...

The Great Blue Hole is diving's most recognizable natural wonder — a near-perfect 1,000-foot-wide circle of deep blue surrounded by the shallow turquoise of Lig...

Cenote Angelita's famous 'underwater river' is actually a hydrogen sulfide cloud at 30 metres that looks like a flowing river complete with fallen trees — one o...

Hin Daeng (Red Rock) and Hin Muang (Purple Rock) are remote pinnacles 70km offshore from Koh Lanta. Hin Muang features Thailand's deepest vertical wall — plungi...

The SS President Coolidge is a 200m WWII troopship that sank in 1942 after hitting mines. Remarkably, it's a shore entry dive — walk in from the beach at Espiri...

The Yucatan's cenotes are flooded limestone sinkholes connecting to the world's longest underwater cave systems. Shafts of light pierce crystal-clear freshwater...

St. John's Reef marks the southernmost point most Red Sea liveaboards reach, and the effort pays off with some of Egypt's healthiest coral and biggest sharks. T...

Cozumel's reputation as the drift diving capital of the world is well earned — gentle-to-moderate currents carry divers effortlessly along spectacular walls and...

Gozo punches far above its weight as a dive destination, offering the Mediterranean's finest underwater topography with dramatic caves, swim-throughs, and the i...

Ojamo Mine is a flooded limestone quarry near Helsinki offering astonishing visibility that can exceed 40 metres in its frigid, gin-clear water. Submerged tunne...

Niihau, Hawaii's privately owned 'Forbidden Island,' offers some of the clearest water in Hawaii with visibility regularly exceeding 40 metres. Access is strict...

Niue is a single raised coral atoll in the South Pacific with some of the clearest water on Earth — 60-metre visibility is routine. Shore-entry dives drop into...

Fury Shoals is a vast offshore reef system south of Marsa Alam, best accessed by liveaboard. Shaab Claudio features a cathedral-like cave with light beams pierc...

Lanai's famous Cathedrals are lava tube caverns where shafts of sunlight pierce the darkness, creating one of Hawaii's most photographed underwater scenes. The...

Andros hosts over 175 blue holes — more than anywhere else on Earth — plus the third-largest barrier reef. The inland blue holes plunge into cathedral-sized cav...

Vis Island, Croatia's most remote inhabited island, was a military base closed to tourists until 1989, leaving its underwater world remarkably preserved. The Bl...

Fiji has earned the title 'Soft Coral Capital of the World' — its reefs explode in electric pinks, purples, and oranges that create some of diving's most photog...

The Uluburun wreck site near Kaş is where one of the most important Bronze Age shipwrecks was discovered, dating to the 14th century BC. While the artefacts are...

Easter Island sits 3,700 km from the Chilean mainland in the most remote inhabited waters on Earth, with visibility exceeding 60 metres in volcanic-blue seas. A...

Ustica was Italy's first marine protected area (1986), and the decades of protection show — massive groupers approach divers without fear, and the volcanic topo...

Bermuda sits atop more than 300 shipwrecks spanning four centuries, making it the undisputed wreck diving capital of the Atlantic. The world's northernmost cora...

The Azores sit in the middle of the Atlantic where volcanic seamounts create oases of life that attract blue sharks, makos, mantas, and even sperm whales. Blue...