Krabi offers a great opportunity for diving due to its numerous natural marine resources including over a hundred offshore islands. Dive shops around Rai Le and Ao Nang provide dive trips as well as rent diving and snorkeling gear such as mask/snorkel/fin.

The advantage of diving from Ao Nang is the nearby sites in the Poda Island group, where water visibility is better than that of the mainland, but not as good as Phi Phi. There are 15 dive sites off of Ao Nang, all reachable with a 20 to 60-minute boat ride. For experienced divers there is a 50-meter long cave at 5-12 meters depth at Yawabon Island behind Poda. The water visibility is at its best from November to April. Some Ao Nang dive shops close during low season, May to October, while some (Ao Nang Divers for instance) remain open all year long. Unlike Phi Phi, scuba dive operators in Ao Nang close from May to October.