Pulau Dangli is a reef site located 3218 metres from the shore of the Perhentian Islands. Accessible only by boat, the site features depths ranging from 3 to 18 metres with an average of 9 metres. Conditions are generally calm, though visitors should be aware of potential rip currents and jellyfish. Visibility at the site varies between 3 and 10 metres, and water temperatures remain warm throughout the year, typically between 29 and 31 degrees Celsius. The site is well-suited for beginners, offering a 4 out of 5 rating for snorkelling activities.

Pantai Pasir Tengkorak is a shore-entry reef site located on the northern coast of the Perhentian Islands. The site features rocky areas at the ends of the beach that support small reefs. Divers and snorkellers can expect to encounter a variety of reef fish and invertebrates typical of the region. Conditions are generally warm, with water temperatures ranging between 29C and 31C throughout the year. While suitable for beginners, visitors should be aware of moderate to strong currents in the area. Facilities available at the beach include parking, toilets, showers, changing rooms, and a rinse station.

Datai Bay, located in the Perhentian Islands, features a well-preserved reef and artificial reef structure surrounding the islet of Pulau Anak Datai. This shore-entry site is suitable for beginners, with depths ranging from 1 to 10 metres and an average depth of 5 metres. Snorkellers can expect mild currents and visibility between 5 and 15 metres. The habitat supports a variety of reef fish and invertebrates typical of the region. Water temperatures remain warm throughout the year, between 29 and 31C. Facilities including showers, toilets, changing rooms, and parking are available, along with local dive shops offering guided tours.

Pulau Timun, or Cucumber Island, is a T-shaped island located on the eastern side of the Perhentian Islands. The site features several secluded coves with coral patches situated close to the shoreline. Diving and snorkelling are conducted at depths ranging from 1 to 10 metres, with an average depth of 5 metres. Conditions are generally mild, though surf can be a hazard. Visibility typically fluctuates between 5 and 15 metres. Access to the water is possible from both the shore and by boat. The site is suitable for beginners, with typical dives lasting approximately 45 minutes.

Pulau Bumbon Besar is a quiet island located southeast of Kuah, featuring fringing reefs that remain relatively undisturbed by tourist crowds. This marine site is suitable for beginners, with depths ranging from 3 to 15 metres and an average depth of 8 metres. Access is strictly by boat, as the site is situated 5500 metres from the shore. Divers and snorkellers can expect mild currents and visibility between 5 and 15 metres. Water temperatures are consistent, typically ranging from 28 to 31 degrees Celsius throughout the year. Be aware of sharp coral when navigating the reef environment.

The Crimescene is a reef site located off the Perhentian Islands, Malaysia, accessible only by boat. The topography features a reef ranging from 5 to 25 metres in depth, with an average of 15 metres. The site includes an overhead environment with a cave and swim-through sections, requiring careful buoyancy control. Conditions are variable, with visibility ranging from 5 to 20 metres and currents that can shift without warning. Water temperatures remain consistent between 28 and 30 degrees Celsius. Due to the presence of sharks, strong currents, and overhead environments, divers should remain close to their guide at all times. Guided tours are available for this site.

Tanjung Intan is a reef site located in the Perhentian Islands, Malaysia, suitable for beginner divers. The reef extends from the surface to a maximum depth of 20 metres. Access is exclusively by boat, and divers should remain aware of local vessel traffic. The site features mild currents, though conditions can vary, and visibility is subject to change. Divers are advised to carry a surface marker buoy for safety during ascents. The habitat supports a variety of reef fish and invertebrates typical of the region. Water temperatures are warm, ranging between 28 and 31 degrees Celsius throughout the year.

Razorreef is a compact reef site in the Perhentian Islands, Malaysia, offering a shallow dive between 5 and 9 metres. The site is suited for intermediate divers who can manage buoyancy in variable conditions. With visibility ranging from 2 to 6 metres, the experience focuses on close-up inspection of the reef structure rather than wide-angle views. Water temperatures remain warm between 29 and 31 degrees Celsius, and currents are typically mild. Divers should exercise caution regarding sharp coral and rocks throughout the 60-minute dive. Due to the limited visibility, carrying a torch is recommended to navigate the reef safely and observe details.