Pulau Gosong Perak is a submerged sandbar in the Thousand Islands that emerges only at low tide. The site features a reef slope with a drop-off, reaching depths between 1 and 15 metres with an average of 5 metres. Access is by boat only, and the site is suited for intermediate snorkelers due to the depth and potential for sharp coral. Visibility typically ranges from 5 to 15 metres with mild currents. Species recorded around this area include wrasses, anemonefish, butterflyfish, and various invertebrates such as nudibranchs and clams. Water temperatures remain consistent throughout the year, ranging between 29 and 30 degrees Celsius.

Bunder 1 is a reef site in the Thousand Islands featuring a gradually sloping contour. The topography consists of a combination of massive reefs and soft corals. Divers can explore depths ranging from 5 to 30 metres, with an average depth of 15 metres. Access to this site is by boat only. Conditions include mild currents and visibility that fluctuates between 5 and 25 metres. The site is suitable for beginners, with typical dives lasting around 45 minutes. Hazards to be aware of include boat traffic, currents, depth, and potential for low visibility.

Maria's Heart is a reef site in the Thousand Islands, Indonesia, characterised by its hard coral formations and distinctive heart-shaped sponges. The topography includes areas of silt on the reef structure. This site requires boat access and is suited for intermediate divers due to the presence of strong currents. Divers should be aware of variable conditions, including potential low visibility and boat traffic in the area. Water temperatures remain consistent throughout the year, typically ranging between 29C and 30C.

Spongebob is a marine dive site located in the Thousand Islands, Indonesia. The topography is defined by the presence of large seafans attached to the reef structure. Divers should note that the site features an open water depth limit, requiring careful monitoring of depth gauges during the descent and ascent. Water temperatures at this location remain consistent throughout the year, typically ranging between 29C and 30C. Due to the open water nature of the site, it is best suited for divers with appropriate training and experience in managing depth and buoyancy in varied conditions.

Kayu Angin Genteng is an uninhabited island in the Thousand Islands, Indonesia, featuring a reef environment suitable for snorkelling. Access to this site requires a boat. The water temperature remains consistent throughout the year, ranging between 29C and 30C. Species recorded around this area include wrasses, butterflyfish, anemonefish, and various invertebrates such as nudibranchs and clams. As an intermediate-level site, it offers a quiet experience away from populated areas. Snorkellers should be prepared for boat-based entry and exit procedures while exploring the reef topography.

Genteng Kecil is a reef site in the Thousand Islands, Indonesia, offering depths between 5m and 25m with an average of 12m. The site is suitable for beginner divers and features a dedicated platform at 6m for skill practice. Access is by boat only. Divers may encounter moderate currents, and visibility ranges from 8m to 30m. Hazards include boat traffic, current, and low visibility. Night diving is available at this location. Species recorded around this area include wrasses, anemonefish, butterflyfish, groupers, and various invertebrates such as sea stars and slugs.

The Cleavage offers three distinct diving directions: west, south, and south-east. The southern route features a shallow coral garden, though divers should note that tidal conditions can impact this area. Heading south-east leads to larger coral formations and a sandy bottom at a depth of 30 metres. Dives typically conclude to the south-west of the island. Water temperatures remain consistent throughout the year, ranging between 29C and 30C. Due to the varying topography and depths, this site is suitable for divers with appropriate training for deeper profiles and tidal awareness.

Kaliage Kecil Utara is a reef site in the Thousand Islands, Indonesia, characterised by its drift diving conditions. The topography features a valley where visibility can drop due to high turbidity at depths between 5 and 25 metres. Divers should be prepared for strong currents that occur between tides. The site is accessible via shore entry and is suitable for intermediate divers. While the reef is noted for its conservation status and rich coral growth, species recorded around this area include wrasses, butterflyfish, anemonefish, and various invertebrates such as nudibranchs and clams. Night diving is available at this location, and guided tours are provided by local dive shops.