The sea off the coast of Sattahip is a magnet for scuba divers. There are numerous wrecks dating from the Second World War sunk in the waters around Koh Chang and Koh Samaesan that are worth exploring and in marine life is particularly abundant in this area. Offshore islands like Koh Larn and Koh Sak are perfect for scuba diving and snorkelling.

Koh Larn (Island) : 10 km. (10mins by speedboat or 30mins by sharing big boat)

Koh Sak (Island): 10 km. (10mins by speedboat only)

Koh Pai (Island): 20 km. (20mins by speedboat only)

Koh Samaesan (Island): 50km. (Navy base area)