This dive site is also located in the National Marine Park of the Similan Islands and Surin Islands and is well known as being one of best shallow reefs in Thailand. The National Park contains over 200 coral species and over 800 species of fish, many of which can be found at Ko Torinla West. On one dive over 240 different fish species were counted and this included manta rays, which can be spotted on this dive.
The reef is made up of many large staghorn corals and is found about 1km from South Surin Island. The reef is about half a km long and slopes down to around 15 to 20 meters. In the shallow parts, there are many branch corals, soft corals, and sea fans.
Divers can expect to see many different types of reef fish including butterfly fish, lionfish, angelfish, and puffer fish. Amongst the hard coral, it is common to spot lobsters and other crustaceans as well as Moray eels poking out of their hiding holes. Turtles can be spotted on the reef and when looking beyond the reef divers can easily spot reef sharks cruising along.