Diving & Snorkeling in East Asia
East Asia’s diving is concentrated in its subtropical south, where the Kuroshio Current sweeps warm, clear water past Japan’s Okinawan islands and Taiwan’s southern reefs. Here divers find healthy coral gardens, dramatic underwater topography, manta rays, and even the odd mysterious ruin beneath the waves.
Visibility is often superb, particularly in summer and early autumn, and the marine life is rich and varied. Facilities range from polished resort dive centres to simpler operations on remote islands, so a little planning helps match sites to experience levels.
From coral walls to shark-patrolled channels, the sites below cover the region’s best underwater experiences.
Where to dive#
Okinawa, Japan The main islands of the Okinawa chain offer year-round diving on coral reefs, wrecks, and dramatic seascapes, including the famous Blue Cave near the coast. Warm water and abundant fish life make it Japan’s premier dive destination.
Ishigaki, Japan A gateway to some of Japan’s best diving, celebrated for reliable manta-ray encounters at cleaning stations and vibrant coral around the surrounding Yaeyama islands. Its clear tropical water draws divers from across the region.
Miyako Island, Japan Renowned for exceptional visibility and dramatic underwater terrain of arches, tunnels, and caverns carved into the reef. The island’s clear blue water and intricate topography make it a favourite among experienced divers.
Kenting, Taiwan At Taiwan’s tropical southern tip, the waters within and around the national park offer accessible coral reefs, sea fans, and reef fish. Warm and easy to reach, it is the island’s most popular introduction to diving.
Jeju, South Korea The volcanic island offers cool-water diving among soft corals, kelp, and dramatic lava formations, plus the chance to see the famous female free-divers who harvest the seabed. It is Korea’s leading dive destination.
Kerama Islands, Japan A short ferry from Okinawa’s capital, these islands are famous for the brilliant clarity known as Kerama Blue, sea turtles, and pristine coral, making them one of Japan’s most rewarding and accessible dive areas.
Yonaguni, Japan Japan’s westernmost island is famous for the mysterious Yonaguni Monument, a vast stepped underwater rock formation debated as natural or man-made. Divers also come in winter for adrenaline-charged encounters with schools of hammerhead sharks.
Green Island, Taiwan A small volcanic island off Taiwan’s east coast ringed by healthy coral reefs and blessed with excellent visibility. Home to one of the world’s rare seawater hot springs, it offers rewarding tropical diving with an unusual after-dive soak.
Orchid Island, Taiwan A remote isle south of Taiwan inhabited by the indigenous Tao people, surrounded by pristine reefs, drop-offs, and abundant marine life. Its clear, current-swept waters and unspoiled underwater terrain reward divers who make the boat journey.
Sanya, China On the tropical southern tip of Hainan Island, the reefs and offshore islets offer China’s most popular warm-water diving. Easy conditions and dive schools around the palm-fringed bays make it the country’s leading introduction to the sport.
Kume Island, Japan Part of the Okinawa chain, this quieter island is renowned for the Hate-no-Hama sandbar and vibrant reefs teeming with tropical fish. Its clear water and relaxed atmosphere make it a favourite escape for divers avoiding the busier hubs.
Iriomote, Japan A wild, jungle-cloaked island in the Yaeyama group where mangrove rivers meet coral seas. Divers explore manta cleaning stations and coral gardens, while the surrounding waters form part of a protected national park rich in marine life.