Liveaboards in Thailand are centered primarily around the Similan Islands, a chain of 9 small islands with white sandy beaches, located on the west coast of the Thai peninsula. Surrounded by the richest waters around Thailand, the diving in the Similans is without a doubt the best that Thailand has to offer. Diving here is all about the beautifully colourful reefs, sleepy leopard sharks, majestic mantas and frequent whaleshark encounters.