This dive site, Ko Losin, is an isolated lighthouse reef located over 100km off the eastern coast of the Malay Peninsula in Thailand, near the Malaysian border. As a remote island in the open ocean, it offers pristine conditions. Underwater navigation typically involves exploring the reef surrounding the lighthouse, known for its healthy coral structures and varying depths down to 22 meters. There is no significant historical context provided beyond its natural formation as an exposed reef.
Ko Losin is renowned for its pelagic encounters, with frequent sightings of magnificent whale sharks, which often approach boats and can be snorkeled with directly from the surface. Divers can also regularly spot majestic Mobula and Manta Rays gliding gracefully through the blue. The site is also home to unique species like the elusive Dragonfly Catshark, along with a vibrant array of reef fish and extensive, healthy coral formations typical of a thriving, isolated reef environment.
The best time to visit Ko Losin for the most incredible whale shark and pelagic encounters generally aligns with the region's main pelagic season, typically spanning from November to May. Due to its extreme isolation, accessing Ko Losin usually requires multi-day liveaboard trips, making it a destination for dedicated divers. Both scuba divers and freedivers will appreciate the often excellent visibility and the guaranteed abundance of large marine life, making it an exceptional destination for wide-angle photography and unforgettable big animal encounters.
