This dive site, Koh Bida Nok, is renowned for its exceptional biodiversity in Thailand's Andaman Sea. It features a gently sloping reef around the island, providing ample exploration for all levels. A notable feature is the dramatic wall on the southwest side, which plunges to depths of 22-26 meters, offering a different topography. Navigation typically involves following the reef contours around the island.
The rich waters surrounding Koh Bida Nok are teeming with an impressive array of marine life. Divers can frequently encounter Green and Hawksbill turtles, along with Black Tip reef sharks patrolling the reef. Schools of barracuda and yellow snapper are common sights, while macro enthusiasts will delight in discovering nudibranchs, octopuses, and various moray eels. Lionfish and trevally also add to the vibrant underwater tapestry.
The best time to visit Koh Bida Nok, and the Andaman Sea generally, is during the dry season from November to April, when visibility is typically at its peak and sea conditions are calm. This site is excellent for both scuba divers and freedivers, with its varied depths catering to different skill sets. Snorkelers can enjoy the shallow, vibrant reef areas. Divers should be mindful of potentially variable currents, especially around the exposed points of the island.
