Koh Rok
The west side of Koh Rok is comprised of a hard coral reef that slopes gently downwards. There is an abundance of colourful reef fish here as well as
plenty of moray eels and octopus. Look closely for the numerous different
nudibranchs. Blacktip reef sharks can be seen in the early morning and again at dusk. Watch out for Kuhl's blue-spotted stingrays partially hidden in the sand on the sea bed, the most common type of ray found at Thailand's dive sites.
On the eastern side of Koh Rok you'll find lots of soft corals with large Gorgonian fans and sponges. This attracts
plenty of turtles and you can get quite close to them, especially while they're feeding. The point of the island has fairly strong current so pelagic fish are often seen here including mackerels and cobias.