This dive site provides divers with a chance to spot many different snapper species in vast numbers. Snapper Alley is a typical Similan Island dive site, with many boulders and rocks scattered around a sandy bottom. It is an easy dive site with a maximum depth of around 20 meters, and can be completed by divers of all levels.

The name of the dive site indicates large numbers of snappers, which are a great part of the dive, but there are many other types of fish for divers to spot. The snappers, however, make the dive site very different from the normal dive in the area and are a great photo opportunity as it is rare to be able to spot this many different types of snapper on one dive.

The main three species of snapper found here include the blue stripe snapper, the black and white snapper, and the Checkered snapper. Many more species patrol the reef in huge numbers and it is quite a phenomenal site.

The marine life is otherwise, very similar to other Similan Islands dive sites and includes moray eels, barracuda, parrotfish, blue spotted stingrays, and sometimes leopard sharks. Night dives are also completed here, as there are many different invertebrates and crustaceans to discover hiding in the nooks and crannies, or hunting around for something to eat.