Hin Daeng, Koh Haa and Phi Phi

The route combines three gems of the southern Andaman: the open-sea reefs of Hin Daeng and Hin Muang, the island archipelago of Koh Haa with caves, and the coral walls of Phi Phi. The diversity of underwater landscapes — from vertical walls to stalactite caves — makes this one of the most interesting routes in the region.

Hin Daeng and Hin Muang attract pelagic fauna: grey reef sharks, manta rays, and barracuda. Koh Haa is a group of five islands with underwater caves decorated with stalactites, home to turtles and nudibranchs. Koh Dok Mai is a standalone limestone rock with crevices in the shallows. The route concludes at Koh Bida Nok near Phi Phi, where a sheer wall drops into the depths attracting leopard sharks.