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.

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.

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.

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.

Jetski Lagoon is a marine dive site located within the Thousand Islands, Indonesia. Water temperatures at this location are relatively stable, ranging between 29C and 30C throughout the year. While specific observations at this exact site are limited, species recorded around this area include various wrasses. Divers should be aware that conditions at this site can vary. Access to the lagoon is typically via boat from the surrounding islands. The site is suitable for those looking to explore the marine environment of the Thousand Islands, though visitors should note that the area is generally considered to have limited appeal for diving.

Pulau Putri in the Thousand Islands offers a shallow reef and artificial reef environment suitable for beginners. Divers and snorkellers can explore depths ranging from 3 to 7 metres, with an average depth of 5 metres. The site features mild currents and visibility between 5 and 20 metres. Water temperatures remain consistent throughout the year, typically between 29 and 30 degrees Celsius. Entry is via the shore, and the site supports night diving. Species recorded around this area include various wrasses, anemonefish, butterflyfish, groupers, and sea stars. Hazards to be aware of include lionfish and sea urchins. Facilities include a dive shop, equipment rental, and guided tours.

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.

Pulau Genteng Besar is a reef site located in the Thousand Islands, Indonesia, offering a shallow environment suitable for beginners and snorkellers. The site features an average depth of 10 metres, with a maximum depth of 15 metres. Access is exclusively by boat, as the site is situated 30 kilometres from the shore. Divers and snorkellers can expect mild currents and visibility ranging from 5 to 25 metres. Water temperatures remain consistent between 29 and 30 degrees Celsius throughout the year. Facilities available at the location include equipment rental, air fills, and rinse stations. Due to the nature of the site, visitors should remain aware of boat traffic.