Koh Phangan is ideally located in the middle of the Samui Archipelago. The island has several vibrant reefs along the coast which are great for experienced and novice divers alike.
The Samui Archipelago boasts top sites such as Sail Rock, Chumphon Pinnacles, Southwest Pinnacles, and National Marine Park. Please see detailed descriptions below.
Type: Granite pinnacle emerging from the sea
Depth: 10-30 meters 
Visibility 5-20 meters
Level of Diver: All levels
What to see: Large schools of Yellow-tailed barracuda, Batfish, Trevally and Fusiliers. Leopard Sharks and Whale Sharks are also visitors to this open water site. Anemone fish, Cardinal fish, Parrotfish, Coral Cod, Grouper, Sea Urchins, Moray Eels, Giant Grouper, Red Snappers, and more.
Don't miss the "chimney", a vertical swimthrough beginning at 6 m and ending at 18 with a "window" from 9-11 m.
Type: Granite pinnacles and boulder formations
Depth: 10-30 meters Visibility: 5-20 meters
Level of Diver: Advanced
What to see: Large Groupers and schools of batfish and trevally. Occasional visits by reef sharks and whale sharks. The Pinnacles are covered in vibrant Pink sea anemones and anemone fish.
Type: Granite pinnacles and boulder formations
Depth: 10-30 meters Visibility: 5-20 meters
Level of Diver: All levels
What to see: Large Groupers and schools of batfish and trevally. Occasional visits by reef sharks and whale sharks. The Pinnacles are covered in vibrant Pink sea anemones and anemone fish.
Type: Granite island
Depth: 5-20 meters Visibility: 5-10 meters
Level of Diver: All levels
What to see: Here you will find a slopping reef covered in brain corals, pink anemones and large barrel sponges. You may also see snappers, banded angel fish and blue spotted stingrays. Whale Sharks and Reef sharks have been spotted here occasionally.
Type: Islands with shallow reef
Depth: 1-20 meters Visibility: 5-20 meters
Level of Diver: All level of divers and a great site for snorkelers
What to see: Blue spotted rays, banded sea snakes, schools of fusilier, colorful soft corals, barrel corals, and nudibranches.
Don't miss the swimthroughs and beautiful coral gardens.
Type: Island and sandy beach with offshore reef
Depth: 1-18 meters Visibility: 5-15 meters
Level of Diver: All level of divers and a great site for snorkelers
What to see: Various types of coral including boulder, table, staghorn, and fan. Here you may encounter blue spotted stingrays, great barracuda, butterfly fish, giant grouper and occasionally, reef sharks.
Type: Sandy beach with offshore reef
Depth: 1-14 meters Visibility: 5-15 meters
Level of Diver: All level of divers and a great site for snorkelers
What to see: Variety of colorful corals, fusilier, blue spotted rays, and groupers.
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