This dive site, Crystal Bay in Koh Samui, offers enjoyable diving and snorkeling opportunities. Divers can navigate along the distinctive granite boulders found at both ends of the bay, interspersed with small patches of vibrant coral reef. The underwater topography is generally gentle, making for a relaxed exploration rather than complex navigation, with an average depth of 10 meters.
The coral reefs and rocky areas host a wide variety of marine life. Divers can expect to encounter numerous schools of tropical fish swimming amongst the corals. Closer inspection of the boulders and substrate will reveal smaller fascinating creatures such as crabs, shrimps, and other invertebrates, contributing to a rich biodiversity.
The best time to visit Crystal Bay for diving is typically during the dry season, from March to September, when sea conditions are calmer and visibility is generally at its best. Its shallow average depth and calm conditions make it an excellent spot for beginner divers to gain experience and for freedivers to explore. Snorkelers will also find the bay highly suitable, with plenty to see close to the surface and around the rocky edges.

