As one of the top liveaboard diving destinations in the world, the Similan Islands in Thailand boast impressive marine biodiversity including whale sharks, manta rays and a range of macro life.
The Similans consist of 9 granite islands inside a marine park located 40 miles (65km) off the coast of Thailand in the Andaman Sea. The area attracts whale sharks and manta rays during diving season. In addition, the reef life is fantastic. You might spot giant trevally, scorpion fish, mantis shrimp, blue-spotted rays and cleaner shrimp. Dive sites are split between healthy coral reefs and steep drop-offs with heavy current. Don’t expect to dive any wrecks. The Similan Islands are all about pelagic life and coral reefs. This part of Thailand can only be reached by liveaboard. Most dive safaris last between 2 and 7 nights, and the best time to dive in the Andaman Sea is from November to May.