Hin Tai Nam (populaire benaming is Blueberry Hill)

Loc       5 km south of Koh Chang
Depth    max 16m

Close to Hin Raab, a bare rock full of fish. Only the Southside has coral. Great place for spotting nudibranches, batfish, stingray, eels, groupers�. Visibility 3 to 20m.

Hin rua tek (Banana rock)

Loc       3 km south of Koh Chang
Depth    avarage 10m, max 16m

A rocky dive site, with nice crevices to search for shrimp, lobster, nudibranch, ....there are big table corals, gorgonian fans, soft corals, sponges,..... No abundance of coral, but a dive most people love because of the general surroundings. Visibility from 2 to 15m, OK for snorkeling.

Hin saam sao

Depth    average 11m / max 16m

Towards the northwest of Koh Chang, this dive site has some nice corals, rich fish life, but sometimes has poor visibility because of its closeness to land. One side of the reef was destroyed by dynamite, it is recovering though. Max. depth 16m. Visibility from 2 to 10m.

Hin laab north

Loc       5 km south of Koh Chang
Depth    max 18m

Very close to Hin saam sao, similar dive site. Max. depth 18m. Visibility from 2 to 10m

Koh Khlum

Loc       5 km south of Koh Chang
Depth    5 - 10m

Has a few dive sites around, they are from 5 to 10m, good for beginner divers.

Koh Rang National park sites

Hin ga daeng (Koh Rang pinnacle)

Loc       1 km nw of Koh rang
Depth    average 15m / max 30m

This spectacular pinnacle is the deepest dive around Koh Rang, a great multilevel site. The rock itself has a very special structure, looks like an underwater cathedral. There are plenty of fish around it, not so much coral though.. Things to see are big barracuda, porcupine, groupers, triggerfish, turtle, nudibranches, sweet lips, and schools of batfish… The currents here can be quite strong and unpredictable, but it is certainly worth the effort! Great site for photography, vis 5 to30m

Koh Tien West

Loc       just nw of Koh Rang
Depth    average 10m, max 16

Sadly enough on one side of the island the coral is mostly destroyed by anchoring fishing boats and dynamite fishing, but it is a good spot to see how the reef recovers. On the Southside of the island there is the biggest formation of stag horn coral you re likely to see, forming a stunning view and protection to an abundance of fish.  Also great snorkeling site

Hin Kuak Ma (or three finger rock)

Loc       about 1 km ne of Koh rang
Depth    average 10m, max 16m

This is one of the greatest dives here. The south side is a rock wall, good to spot eels, nudibranches, stone fish,.... the backside of the rock is a slope, covered in coral, and with an abundance of fish. Sometimes we spot a bamboo shark or turtle, every dive we see blue spotted stingrays, moray eels, blue ringed angelfish, parrotfish, ..... good snorkeling if no current.

Koh Yak and Koh Laun

Loc       about 1 km ne of Koh Rang, in the south
Depth    average 8 m, max 12m

These small islands are ringed with a very beautiful coral reef with a rich abundance of different coral fishes. Both islands are small enough to dive around; because of the shallow depths we have plenty of dive time. Many divers` favourite…
Visibility 5 to 20m

Koh Tong Lang and Koh Kra

Loc       about 1.5 km ne of Koh rang, north
Depth    avarage 7m, max 12

Although snorkelling is the major appeal here, these islands offer some beautiful diving. The special coloured rocks offer nice crevices rich in fish life; the coral is very healthy and varied, big table corals, stag horn, anemones of al sizes and colours.
Visibility 5 to 30m

Other

Koh Wai

This lovely paradise island south of Koh Chang is great for a day trip or overnight stay, beautiful snorkelling, although for diving the reef is quite shallow. Some diving is done on the pinnacles close to Koh Wai, and also on the rocky side of the island. It is a good spot for trainings dives or protected diving when the weather turns bad. 

Koh chang wreck

Is mentioned in many dive guides, but sadly enough it is in silt water, creating zero visibility most of the time.