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.

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.

Hairball One is a muck and reef site located off Siladen Island, Indonesia. Divers typically explore depths between 3 and 30 metres, with an average depth of 15 metres. The site requires boat access and is suited for intermediate divers. Conditions feature mild currents and visibility ranging from 10 to 25 metres. Marine life frequently recorded here includes painted frogfish, snowflake moray, and striate anglerfish. Less common sightings include coconut octopus, ornate and robust ghost pipefish, warty anglerfish, flamboyant cuttlefish, giant frogfish, wunderpus, harlequin sweetlips, fingered dragonet, ribbon eel, and chromodoris nudibranch. Hazards include entanglement, jellyfish, lionfish, low visibility, sharp coral, and stonefish. Night diving is available at this location.

California Dreaming is a reef and pinnacle site located off Siladen Island, Indonesia. The topography consists of twin seamounts that support a variety of soft corals. Divers can expect depths ranging from 15 to 30 metres, with an average depth of 15 metres. Conditions are generally mild, with visibility between 10 and 30 metres and water temperatures consistently between 28 and 30 degrees Celsius. This site is accessible by boat and is suitable for beginners. Night diving is available, and typical dives last approximately 50 minutes. Facilities at the site include air fills, guided tours, equipment rental, and a cafe.

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.

Teluk Kembahu 3 is a marine dive site located 500 metres off Siladen Island, Indonesia. This site offers a combination of muck and reef topography suitable for beginners. Divers can expect depths ranging from 5 to 18 metres, with an average depth of 12 metres. Access is strictly by boat. Conditions include mild currents and visibility between 5 and 15 metres. Water temperatures remain consistent between 28 and 30 degrees Celsius, though occasional cooler thermoclines occur from October to December. Hazards at this site include potential entanglement, low visibility, and the presence of stonefish. Guided tours, equipment rental, and night diving are available.

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.