Orimas Thila is an elongated, submerged reef , the shallowest part of which is at about 5m. There is a sea anemone field at about 15m on the eastern end. On the northern side there are superb caves, overhangs and reef cracks.
SPECIAL FEATURES: Underwater scenery, corals, soft corals, and sea anemones, small fishes. White-tipped shark and whale shark sometimes spotted. Turtle and Manta rays rarely found.