The 19 Best Places for Diving and Snorkeling

The rainforests of the sea: living reefs and protected marine sanctuaries where the water is the wonder. These are the atlas’s coral reefs and marine sanctuaries — the places to bring a mask and fins. Each links to conditions, seasons, and access.

Cocos Island

Pacific Ocean, 550 km off Costa Rica

A rainforest island alone in the Pacific, ringed by waters where hammerhead sharks school in their hundreds — often called the finest big-animal dive site on Earth.

Marine sanctuary Latin America

Great Barrier Reef

Queensland coast, Australia

The largest living structure on Earth — a 2,300-kilometre system of nearly 3,000 individual reefs and hundreds of islands off Queensland, so vast it can be seen from space, and among the most biodiverse places in the ocean.

Coral reef Oceania

Ningaloo Reef

Coral Coast, Western Australia

One of the world's largest fringing reefs — a coral wonderland that hugs the shore of Western Australia, where you can wade off the beach to snorkel with turtles, manta rays, and the giant whale shark.

Coral reef Oceania

Península Valdés

Chubut, Patagonia, Argentina

A windswept Patagonian peninsula and its sheltered gulfs — one of the world's premier marine-wildlife havens, where southern right whales calve close to shore and orcas hunt seals on the beach.

Marine sanctuary Latin America

Raja Ampat

West Papua, Indonesia

An archipelago of jungle-clad karst islands scattered across turquoise seas — the most biodiverse marine environment on Earth, at the very heart of the Coral Triangle.

Marine sanctuary Southeast Asia

The Great Blue Hole

Lighthouse Reef, off Belize

A perfect deep-blue circle in the turquoise Caribbean — a giant marine sinkhole over 300 metres across and 120 metres deep, ringed by coral reef and famed as one of the world's great dive sites.

Marine sanctuary North America

Tubbataha Reefs Natural Park

Sulu Sea, off Palawan, Philippines

A pristine, remote atoll system in the middle of the Sulu Sea — nearly 100,000 hectares of coral reef, sheer walls, and open ocean that rank among the healthiest marine ecosystems on the planet.

Coral reef Southeast Asia

Apo Island Marine Sanctuary

Dauin, Negros Oriental, Philippines

A small volcanic island off Negros ringed by one of the world's most celebrated community-run marine sanctuaries — famous for resident green sea turtles grazing over coral just off the beach.

Marine sanctuary Southeast Asia

Apo Reef Natural Park

Occidental Mindoro, Philippines

The largest contiguous coral reef in the Philippines and the second-largest in the world — an isolated 34-square-kilometre atoll of coral, lagoon, and mangrove in the Mindoro Strait, teeming with sharks, turtles, and rays.

Coral reef Southeast Asia

Balicasag Island

Panglao, Bohol, Central Visayas

A tiny coral island off Bohol ringed by a protected marine sanctuary famous for its dramatic reef wall, resident sea turtles, and swirling schools of jackfish — one of the country's premier diving and snorkelling sites.

Marine sanctuary Southeast Asia

Belize Barrier Reef

Caribbean coast of Belize

The largest barrier reef in the northern hemisphere — some 300 kilometres of coral running the length of Belize, with three of the Atlantic's four true atolls behind it and the Great Blue Hole at its centre.

Coral reef North America

Donsol Whale Shark Sanctuary

Donsol, Sorsogon, Bicol Region

A quiet Bicol town whose plankton-rich bay draws seasonal gatherings of whale sharks — the world's largest fish — met on a strictly regulated, community-run, swim-alongside basis that pioneered ethical encounters in the Philippines.

Marine sanctuary Southeast Asia

Komodo National Park

Lesser Sunda Islands, East Nusa Tenggara, Indonesia

A cluster of rugged islands that shelter the Komodo dragon — the largest lizard on Earth — above water, and some of the world's richest coral reefs below, including a beach tinted pink by red coral.

Marine sanctuary Southeast Asia

Moalboal Sardine Run

Moalboal, Cebu, Central Visayas, Philippines

A vast resident school of sardines swirls in the shallows off Panagsama Beach on Cebu's west coast — a living silver tornado you can reach by swimming a few strokes from shore.

Marine sanctuary Southeast Asia

Palau's Rock Islands

Rock Islands Southern Lagoon, Palau, Micronesia

Hundreds of emerald mushroom-shaped limestone islands scattered across a turquoise lagoon — a marine wonderland of hidden lakes, world-class reefs, and a lake full of harmless golden jellyfish.

Marine sanctuary Oceania

Ras Muhammad

Southern Sinai, Egypt

At the very tip of the Sinai Peninsula, a marine national park where sheer coral walls plunge into the Red Sea — one of the world's great diving and snorkelling destinations.

Marine sanctuary Africa

Similan Islands

Mu Ko Similan National Park, Phang Nga Province, Andaman Sea, Thailand

An eleven-island granite archipelago in the Andaman Sea whose west sides are stacked with room-sized boulders underwater — widely rated the best diving in Thailand, and closed for five months a year to let the reef recover.

Coral reef Southeast Asia

Sipadan Island

Celebes Sea, off Sabah, Malaysian Borneo

Malaysia's only oceanic island — a coral pinnacle rising 600 metres from the floor of the Celebes Sea off Borneo, ringed by walls of reef alive with turtles, barracuda tornadoes and reef sharks.

Coral reef Southeast Asia

Sohoton Cove & Jellyfish Sanctuary

Bucas Grande, Surigao del Norte, Mindanao, Philippines

A hidden lagoon system on Bucas Grande Island, entered through a sea cave passable only at low tide, sheltering stingless jellyfish, karst-walled coves, and cliffs you can leap from into deep clear water.

Marine sanctuary Southeast Asia