Koh Rong
Cambodia · Gulf of Thailand
Koh Rong off Cambodia's southern coast is the country's main diving spot — gentle reefs, sand bottoms, easygoing macro, and a small community of dive shops centered around the certification market. Not the world class diving of its neighbors, but a relaxed introduction.
How this reef is doing
ⓘ How we measure thisReef state
Sheltered reefs in shallow water. Cover thinning; conservation efforts ramping up.
Coral cover
Fish life
Heat
No unusual heat right now.
Fishing
Protected on paper, but boats are still busy nearby.
Sources · MERMAID and partner coral surveys · NOAA Coral Reef Watch · Global Fishing Watch and reef gravity
What you will see
12 species across the dive sites here
Clownfish
Seen 10 months ago
at Koh Rong Corner
Parrotfish
Seen Mar 2024
at Koh Rong Corner
Bamboo Shark
Seen year round
at Koh Rong Corner
Barracuda
Seen year round
at Back Door
Barrel Sponge
Seen year round
at Koh Rong Corner
Batfish
Seen year round
at Back Door
Coral Catshark
Seen year round
at Koh Rong Corner
Near threatened
Flabellina Nudibranch
Seen year round
at Koh Rong Corner
Nudibranch
Seen year round
at Back Door
Pufferfish
Seen year round
at Back Door
Reef shark
Seasonal visitor
at Back Door
Scorpionfish
Seasonal visitor
at Back Door
Dive sites
What divers say
Not the most spectacular reef in Southeast Asia but the cheapest and most chill cert I've seen.
Good to know
Bioluminescence
Many shops run free bio luminescent plankton swims at night — worth doing.