Koh Kood Snorkeling Map

Koh Kood sits at the southeastern edge of the Mu Koh Chang archipelago, where the Gulf of Thailand meets a submerged granite shelf that drops from shallow fringing reefs to depths exceeding 30 meters within two kilometers of shore. The underwater topography creates distinct snorkeling zones defined by accessibility, current patterns, and coral health. The island's eastern coastline harbors calm-water sites protected from seasonal southwest monsoons. Ao Tapao, the island's longest beach, features scattered coral heads 30 to 80 meters offshore in 2 to 4 meters of water. Bang Bao Bay to the south offers similar nearshore conditions with better coral coverage along its southern headland. These sites require no boat access and function year-round, though visibility degrades during the May to October monsoon when river runoff clouds nearshore waters. Snorkelers reach these reefs by swimming directly from shore or paddling sea kayaks to minimize reef contact. The Koh Rang archipelago, 20 kilometers west of Koh Kood, represents the region's premier snorkeling destination. The island cluster sits within national marine park boundaries established in 1982, and its reefs benefit from enforced fishing restrictions and mooring buoy systems that prevent anchor damage. Boat operators follow fixed routes from Koh Kood's northwest piers, with trips covering three to four sites across a six-hour window. The marine park fee applies to all visitors entering designated zones. Current patterns dictate site selection and timing. Tidal exchanges through channels between Koh Rang's islands create moderate drift conditions that concentrate fish but require continuous swimming to maintain position. Operators schedule snorkel stops during slack tide periods when current velocity drops below one knot. The optimal departure window between 08:00 and 14:00 aligns with stable morning sea states and slack tide cycles that typically occur mid-morning and mid-afternoon. Access routes from Koh Kood require advance coordination. No public ferry service operates to Koh Rang; all trips run through dive shops or resort tour desks that consolidate passengers onto longtail boats or speedboats. Longtail routes take 90 minutes and limit passengers to 12 for shallow-draft reef access. Speedboats cut transit to 40 minutes and accommodate larger groups but anchor in deeper water, requiring longer surface swims to reef edges.