Pulau Putus is a reef site located off Siladen Island, offering terrain that slopes from the shallows down to 30 metres. With an average depth of 18 metres, this site is suited for intermediate divers. Entry is possible from both shore and boat. Visibility ranges from 15 to 30 metres, and water temperatures remain warm between 28 and 30C. Divers should be aware of moderate currents and the presence of stonefish, which can be found on the reef and seabed. To manage the current, it is recommended to dive during slack tide and avoid contact with the substrate.

Jiko Yance is a marine site off Siladen Island featuring a combination of reef and wall topography. Suitable for intermediate divers, the site requires boat access and offers depths between 10 and 30 metres, averaging 25 metres. Divers encounter moderate currents that can strengthen quickly, necessitating careful monitoring of conditions. Visibility is variable, ranging from 5 to 30 metres; when visibility is low, staying close to the wall provides a necessary reference point. The site is also suitable for night diving. Hazards include sharp coral and stonefish resting on the reef structure. Divers should be prepared to end the drift if currents increase.

Angel's Window is a pinnacle located 1000 metres off Siladen Island, Indonesia. The site features a distinct swim-through and rises to within one metre of the surface, making it accessible for snorkelling. Divers can explore depths ranging from 1 to 32 metres, with an average depth of 25 metres. Access to the site is by boat only. Conditions include moderate currents and potential surge, requiring intermediate skill levels. The water temperature remains consistent between 29C and 30C throughout the year. Due to the depth and current, divers should be aware of the risks of nitrogen narcosis and manage their bottom time accordingly.

Batu Sandar, located off Siladen Island, offers a diverse underwater environment combining reef, pinnacle, and muck diving. This site is accessed by boat and is suitable for beginners, with depths ranging from 20 to 28 metres. Visibility is approximately 5 metres, making a dive torch useful for spotting small marine life. Divers can encounter species such as the ornate ghostpipefish, various nudibranchs including Chromodoris and Nembrotha, wrasses, flatworms, shrimp, sea stars, cardinalfish, crabs, and snails. Guided tours are available to assist with locating these species in the nutrient-rich waters. Equipment rental and air fills are provided locally.

Tanjung Kusu Kusu, located off Siladen Island, offers a diverse underwater environment where reef structures transition into muck terrain. The site is suitable for beginners, with depths ranging from 5 to 20 metres and an average depth of 15 metres. Divers and snorkellers can expect mild currents and visibility between 5 and 20 metres. Access to the site is by boat only. Water temperatures remain consistent throughout the year, typically between 29 and 30 degrees Celsius. The site is also available for night diving, providing opportunities to observe nocturnal activity in the reef and rubble zones.

Angel Window is a reef and pinnacle dive site located off Siladen Island. The site features a depth range of 8 to 30 metres, with an average depth of 25 metres. Access is by boat only, and the site is suitable for intermediate divers. Conditions include mild currents, though divers should be aware of potential surge and strong currents. Visibility at the site ranges from 5 to 30 metres. Water temperatures remain consistent throughout the year, typically between 28C and 30C. Facilities available include air fills, dive shops, and guided tours. Night diving is permitted at this location.

Aw Shucks, located off Siladen Island, offers a diverse underwater environment combining reef, muck, and artificial reef structures. Suitable for beginners, the site features depths ranging from 15 to 28 metres with an average of 18 metres. Divers encounter a variety of marine life including the Painted Frogfish, Robust Ghost Pipefish, Coconut Octopus, Flamboyant Cuttlefish, and various nudibranchs like Chromodoris and Nembrotha. Currents remain mild, though visibility fluctuates between 5 and 25 metres. Water temperatures are consistently warm, between 28 and 30 degrees Celsius. Boat access is required for this site, which also supports night diving. Facilities include rinse stations and gear storage for post-dive maintenance.

Batu Kapal is a complex site off Siladen Island featuring a mix of reef, wall, and pinnacle topography alongside an artificial reef. Divers should be prepared for strong currents and surge, making this an intermediate-level site accessed exclusively by boat. Depths typically range from 10 to 30 metres, with an average of 25 metres. Visibility fluctuates between 10 and 30 metres. Water temperatures generally sit between 28 and 30C, though they can drop to approximately 25C during July and August. Species recorded around this area include various frogfish, ghost pipefish, octopuses, and cuttlefish.