Indonesia, an archipelago of over 17,000 islands, is known for its diverse marine life, crystal-clear waters, and vibrant coral reefs.

For dive enthusiasts, Indonesia is the embodiment of underwater paradise. From the breathtakingly beautiful Raja Ampat to the mysterious muck diving spots in Lembeh, there's something for everyone in this tropical haven.

Before you dive in—literally—don’t forget to complete the Indonesian Customs Declaration (e-CD) online. It’s a mandatory form for all international arrivals and can be filled out easily before landing to save time at the airport. It ensures a smoother entry process so you can get to your underwater adventure faster.

If you're looking to embark on a diving journey in Indonesia, here’s your guide to the top 10 must-visit sites.

A stunning underwater view of a vibrant coral reef with a school of fish in West Papua, Indonesia.

1. Raja Ampat, Papua

Arguably the crown jewel of diving in Indonesia, Raja Ampat boasts the richest marine biodiversity in the world. With over 1,500 species of fish and 537 species of corals, divers are treated to a vivid spectacle of marine life. Dive spots like Cape Kri and Manta Sandy are among the favorites, with opportunities to spot schools of barracudas, manta rays, and even the elusive wobbegong shark.

2. Komodo Island, East Nusa Tenggara

Beyond its famous dragons, Komodo Island is a mecca for divers. With its nutrient-rich waters, the marine life here is both abundant and varied. Popular sites like Batu Bolong and Manta Point promise sightings of sharks, turtles, and, of course, manta rays. Plus, the currents in Komodo make for thrilling drift dives for experienced divers.

3. Lembeh Strait, North Sulawesi

Known as the 'muck diving capital of the world', Lembeh offers a unique diving experience. Amidst the sandy bottom and murky waters, divers can spot a plethora of unusual critters like the mimic octopus, hairy frogfish, and pygmy seahorses. It's a macro photographer's dream come true.

4. Bali

Bali's diving sites are as diverse as the island itself. From the USAT Liberty Wreck in Tulamben, teeming with marine life, to the deep drop-offs and coral gardens in Nusa Penida where you might spot the Mola Mola (sunfish), Bali offers a range of experiences for divers of all levels.

5. Bunaken National Marine Park, North Sulawesi

With its clear waters and vibrant coral walls, Bunaken is a must-visit. The park is home to seven times more genera of coral than Hawaii, and with its steep walls and abundant marine life, divers can enjoy encounters with reef sharks, sea turtles, and an array of colorful fish.

6. Togean Islands, Central Sulawesi

A lesser-known gem, the Togean Islands offer pristine reefs and a tranquil diving experience. Apart from the vibrant marine life, divers can explore underwater caves and even a sunken bomber plane from World War II. The Togean Islands are perfect for those looking to escape the tourist trail.

7. Derawan Islands, East Kalimantan

This archipelago comprises several islands, each boasting unique diving experiences. From swimming with stingless jellyfish in Kakaban Island's lake to spotting barracudas and green turtles in Sangalaki, the Derawan Islands promise a dive experience you won't soon forget.

8. Wakatobi, Southeast Sulawesi

Wakatobi, a UNESCO Biosphere Reserve, boasts some of the most pristine reefs in the world. With over 25 dive sites, divers can explore stunning underwater landscapes and a diverse array of marine life. It's also a haven for underwater photographers due to its excellent visibility and vibrant marine biodiversity.

9. Gili Islands, Lombok

The Gili Islands, comprising Gili Trawangan, Gili Meno, and Gili Air, are renowned for their turtle-rich waters. These islands are perfect for beginner divers, offering easy dives and a plethora of marine life. From bumphead parrotfish to white-tip reef sharks, the Gilis never disappoint.

10. Banda Islands, Maluku

Last, but certainly not least, the Banda Islands are a haven for spice traders and divers alike. The waters here are rich in nutrients, attracting a diverse range of marine life. Dive sites like Pohon Miring offer stunning coral walls, while the Lava Flow site showcases the rapid coral growth after a volcanic eruption.

Conclusion

Indonesia's vast archipelago offers some of the best diving spots globally, with each site offering a unique underwater experience. Whether you're a macro enthusiast, a lover of large marine fauna, or a history buff keen on exploring sunken wrecks, Indonesia has it all. Dive in and let the wonders of the deep take your breath away!

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Note: Always ensure you're diving within your certification limits and with reputable dive operators. Protect the marine environment by practicing responsible diving. Remember to not touch or harass marine life and always buoyancy control to avoid damaging corals.