Diving in the Andaman Sea just off Koh Lanta is an unforgettable experience. Located around stunningly beautiful tropical islands, the dive sites around Koh Lanta are home to vibrant and colourful corals, and boast an abundance of tropical fish-life. From macro critters to majestic manta rays - the surrounding dive sites will leave even the most seasoned diver breathless.
Koh Ha to the west, is a group of 5 islets suitable for both diving and snorkeling. This area is home to about 12 great dive sites, and it is quite common to experience 30m+ visibility here. A beautiful lagoon area is perfect for first-time diving and courses, where you can see anything from ornate ghost-pipefish and harlequin shrimps to turtles and barracudas, while more experienced divers can experience deeper sites and undersea caverns - the most famous being the 'cathedral' at Koh Ha Yai, where the huge cave entrances make it possible to enter without lights, and even surface inside the island where beautiful limestone formations form a 'cathedral' like ambiance.
Hin Daeng and Hin Muang, two world-famous dive sites located within 100 metres of one another are known for their beautiful corals and for having some of the deepest drop-offs in Thailand. Located 50 km from Koh Lanta, these dive sites are a must-see for experienced divers. Being the lone outcrops on a 70m seabed, they are home to an amazing variety of pelagic life. Schooling tunas and trevally hunt beside rainbow runners and barracuda. A wide diversity of macro-organisms on the reef will try to distract you from the beautiful manta rays that very often circle overhead, and there is always the possibility of whale shark encounters here. These dive sites are often regarded as the best Koh Lanta has to offer.
Koh Bida gives the opportunity to admire beautiful gorgonian fans, and is a favoured spot to see leopard sharks. This dive site is located within the Phi Phi national park and is about an hour by boat from Koh Lanta. Further away, the King Cruiser Wreck sits upright on a sandy bottom at 30m, and Shark Point and Anemone Reef team with fish life.
Koh Muk to the south of Koh Lanta, is home to the famous 'Emerald Cave' where a hidden entrance leads you 80m inside the island, to one of the most spectacular sights Thailand has to offer. A beautiful white sandy beach is located within the hidden lagoon, completely surrounded by sheer cliffs - a truly unforgettable sight. Seahorses are found here, while Pipefish, juvenile Harlequin Sweetlips and a host of macro-organisms can be found on a regular basis. Koh Kradan and Koh Ngai offer diving and snorkeling with beautiful powder-sand beaches.
Koh Rok is most famous for it's beaches and snorkeling, but also offers diving around its two islands. Shallower than the other dive sites, it hosts a wide variety of coral formations. Moray eels, nudibranches and big red octopuses can be found hidden amongst the coral gardens.
