The Best Diving Locations in Southeast Asia

Southeast Asia is a true diver’s paradise, home to some of the world’s most breathtaking underwater landscapes and extraordinary marine biodiversity. From Indonesia’s rich coral reefs to the historic wrecks of the Philippines and the dramatic seascapes of Thailand, the region offers unforgettable experiences for both beginners and seasoned divers. Here’s a closer look at the top diving destinations across Southeast Asia.

Indonesia

Raja Ampat

Known as the “Four Kings,” Raja Ampat consists of over 1,500 islands surrounding Waigeo, Batanta, Salawati, and Misool. Its unparalleled biodiversity makes it one of the world’s premier dive destinations. Expect encounters with manta rays, reef sharks, pygmy seahorses, and some of the most vibrant coral reefs on Earth.

Komodo National Park

Beyond its famous Komodo dragons, the park offers world-class diving with strong currents that attract a wide range of marine life. Signature sites such as Batu Bolong and Castle Rock are loved for their dramatic topography and thriving reefs filled with sharks, manta rays, and brilliant macro species.

Wakatobi National Park

Located in Southeast Sulawesi, Wakatobi is part of the Coral Triangle, boasting exceptional marine biodiversity. Divers enjoy pristine reefs, clear waters, and abundant fish species, along with frequent turtle sightings and spectacular coral formations.

Derawan Islands

A hidden gem off East Kalimantan, the Derawan Islands are known for their non-stinging jellyfish lake, green turtles, manta rays, and whale sharks. Islands like Maratua, Sangalaki, and Kakaban are essential stops for any diving enthusiast.

Philippines

Tubbataha Reefs Natural Park

A UNESCO World Heritage Site located in the heart of the Coral Triangle, Tubbataha is accessible only by liveaboard. Its untouched reefs host sharks, manta rays, and thriving coral ecosystems—making it one of the Philippines’ most sought-after dive destinations.

Coron Bay

Coron is famous for its World War II shipwrecks, offering some of the best wreck diving in Asia. Sites like the Okikawa Maru and Irako Maru are remarkably preserved and now covered in marine life, providing divers with an unforgettable blend of history and nature.

Puerto Galera

Situated in Oriental Mindoro, Puerto Galera offers a diverse range of dive sites, ideal for both novice and experienced divers. From colorful coral gardens to exciting drift dives and rich macro life, it’s a favorite among underwater photographers.

Malapascua

A small island known worldwide for its thresher shark sightings at Monad Shoal. Malapascua also offers beautiful coral sites and diverse marine life, making it perfect for divers eager to encounter rare pelagic species.

Malaysia

Sipadan Island

Off the coast of Sabah, Sipadan is legendary for its massive schools of jackfish, barracuda tornadoes, and abundant sea turtles. Due to strict conservation efforts, only a limited number of divers are allowed daily, so advanced planning is essential.

Mabul Island

Located near Sipadan, Mabul is a muck-diving haven where rare critters such as frogfish, nudibranchs, and seahorses thrive. It’s the perfect base for divers seeking unique macro encounters.

Perhentian Islands

Situated off Peninsular Malaysia’s east coast, the Perhentians are known for crystal-clear waters, vibrant coral reefs, and abundant marine life. They’re an ideal destination for both beginners and experienced divers looking for relaxed, scenic dives.

Thailand

Similan Islands

Located in the Andaman Sea, the Similan Islands are praised for their turquoise waters, granite boulders, and rich marine ecosystems. Divers often encounter manta rays, whale sharks, and flourishing coral habitats.

Richelieu Rock

Part of the Surin Islands National Park, this iconic dive site is a magnet for marine life. Whale sharks, manta rays, and countless macro species frequent the area, complemented by spectacular soft corals and sea fans.

Koh Tao

Nicknamed “Turtle Island,” Koh Tao is one of the world’s most popular places to learn diving. With calm waters, shallow reefs, and budget-friendly courses, it attracts beginners and offers sightings of turtles, reef sharks, and colorful tropical fish.

Other Notable Destinations

Vietnam – Nha Trang & Phu Quoc

Vietnam’s emerging dive scene features vibrant coral gardens, tropical fish, and growing underwater tourism. Nha Trang and Phu Quoc are popular choices for relaxed dives and scenic coastal experiences.

Myanmar – Mergui Archipelago

Remote and largely untouched, the Mergui Archipelago offers pristine reefs and exciting wildlife encounters. It’s ideal for experienced divers seeking off-the-beaten-path adventures in unspoiled waters.

Final Thoughts

Southeast Asia’s diving landscape is exceptionally diverse—ranging from pelagic-rich reefs and dramatic drift dives to serene coral gardens and historic wrecks. Whether you’re chasing thresher sharks, exploring WWII shipwrecks, or photographing rare macro critters, this region promises unforgettable underwater adventures.