Tiga Ruang owed the name to the beach of the same name. Tiga Ruang has a sandy bottom that extends into deep water. On the shallow parts, the are patches of coral clusters all around. This dive site is suitable for snorkelers and entry-level courses alike.

Batu Layar, or translated into Sail Rock, is a hard coral reef of Staghorn Corals and massive Table Corals. The coral reef extends into 18m, and turns into a sandy bottom. Batu Layar is considered one of the best dive sites in Perhentian with consistently good visibility.

Tanjung Basi locates at the Northernmost Tip of Perhentian Besar. The reef sits at 15-20m depth, and current can be strong at times. This is the primary site in Perhentian for deep diving activities, with massive boulders, overhangs, and swim throughs offers an interesting opportunity for divers to explore.

Northwest of Tanjung Basi lies Batu Berendam, one of the deepest dive site in Perhentian. Easily reaching more than 30m depth, the site is made up of massive boulder cluster, with the highest point at 15-18m. Current can be strong, and thermoclines are prominent here.

Laluan Naga, or translated to ’Dragon’s Path’ as majestic topography. The huge boulder juts out from the shore and extends deep into the sandy depth. Peering down at the bottom from the shallows, the rock formation actually looks like something massive have swam through it and flatten the bottom, hence the name.

This dive site is smack middle of Perhentian Besar and Perhentian Kecil. The average depth is 14m, and it is a juvenile breeding ground. The sunken bottles and metal scraps creates a perfect shelter for critters and juveniles alike.

Roughly 200m towards the shore from the famous Terumbu Tiga is Terumbu Dua. Shortened to T2, Terumbu Dua is also a boulder dive site with an amazing underwater view. Since it is closer to the shore, T2 also is an easier dive site with shallower depth than the sister site.

The name of Tuna Bay House Reef is self-explanatory - it locates in front of the Tuna Bay Resort. Blessed with an accessible beach entry, the house reef extends all the way to the Marine Park Jetty. On a lucky day, you can see reef sharks swimming around boulder corals along the jetty.

Teluk Gadong is located at the east side of Perhentian Besar, which is a shallow sandy seabed. The dive site can be access only by boat, is is very suitable for entry level courses and snorkelers alike. Maximum depth is 8-10m deep.

Terumbu Tiga offers one of the best dive in Perhentian. It consists of 3 big boulders with multiple smaller boulders stacked and aligned in-between, creating an amazing topography underwater. The stacked boulders form channel and swim-throughs, allowing advanced divers a chance for a cool photograph.