Sithananne Reef is a rock formation site located off Pigeon Island, Sri Lanka. The reef features a mix of hard and soft corals and reaches depths between 5 and 18 metres, with an average depth of 13 metres. Access is by boat only. Divers may encounter mild currents at the surface and underwater. Visibility ranges from 5 to 30 metres, and water temperatures remain warm between 27C and 30C throughout the year. Hazards at this site include lionfish, stonefish, and sharp coral. Species recorded around this area include wrasses, triggerfish, Moorish idols, spotted boxfish, and various butterflyfish and angelfish species.

Sithanane Pare is a reef site located 1500 metres from the shore of Pigeon Island, Sri Lanka. Accessible only by boat, the site features a rocky topography that begins at a depth of 5 metres and slopes down to a maximum of 18 metres, with an average depth of 15 metres. The reef edge meets a sandy bottom at its deepest point. Conditions are generally mild, with visibility ranging between 5 and 20 metres and water temperatures consistently between 27 and 30 degrees Celsius. This site is suitable for beginners, though divers should remain aware of boat traffic in the area.

Angel Rock is a reef site located 2000 metres from the shore of Pigeon Island, Sri Lanka. This site features healthy coral patches and is accessed exclusively by boat. Divers can expect depths ranging from 2 to 15 metres with visibility typically between 10 and 30 metres. Conditions are generally characterised by mild currents, though divers should be aware of potential hazards including jellyfish, sea urchins, sharks, and sharp coral. The site is suited for intermediate divers, and snorkelling is also possible with a rating of 3 out of 5. Water temperatures remain consistent, ranging from 27 to 30 degrees Celsius throughout the year.

Knife Rock is a reef and pinnacle site located 1000 metres from the shore of Pigeon Island. The topography features rocky coral formations on the south side and boulder formations on the north side. Divers can expect depths ranging from 10 to 25 metres, with an average depth of 15 metres. Visibility is consistently high, typically between 20 and 30 metres, with mild currents. Access to the site is by boat only. The water temperature remains warm throughout the year, ranging from 27C to 30C. Hazards at this location include potential entanglement, lionfish, and stonefish. The site is suitable for beginners and supports night diving.

Pigeon Rocks is a reef and drop-off site located 1000 metres offshore within Pigeon Island National Park. The site features depths ranging from 4 to 20 metres, with an average depth of 10 metres, making it suitable for beginner divers. Access is by boat, and conditions are generally mild with visibility between 10 and 30 metres. Water temperatures remain warm throughout the year, typically between 27 and 30 degrees Celsius. Divers should be aware of potential hazards including boat traffic, sea urchins, sharks, and sharp coral. Guided tours, air fills, and gear storage facilities are available for visitors.

Coral Garden is a shallow reef system located 1000 metres from the shore of Pigeon Island, Sri Lanka. This site is primarily known for its extensive coral formations, which span depths of 1 to 5 metres with an average depth of 3 metres. Conditions are generally mild, with visibility ranging from 10 to 30 metres and water temperatures between 27 and 30 degrees Celsius. Accessible by boat, the site is well-suited for beginners and offers a high-quality snorkelling experience. Divers and snorkellers should be aware of the presence of sharks in the area.

Coral Island is a small rocky outcrop located 500 metres from Pigeon Island, featuring fringing reefs on its northern and southern sides. This site offers a quieter alternative to the main national park, with depths ranging from 6 to 15 metres and an average depth of 10 metres. Access is by boat only. Divers and snorkellers can expect mild currents and visibility between 12 and 25 metres. Water temperatures remain warm throughout the year, between 27 and 30 degrees Celsius. Hazards include jellyfish, sharks, sharp coral, and stonefish. Species recorded around this area include wrasses, surgeonfish, butterflyfish, boxfish, triggerfish, parrotfish, and angelfish.

Swami Rock is a diverse marine site located off Pigeon Island, featuring a combination of reef, wall, and pinnacle topography. Situated 1500 metres from the shore, the site reaches depths between 3 and 24 metres with an average of 18 metres. Divers and snorkellers can explore an underwater landscape defined by deep crevices, submerged Hindu statues, and ancient masonry located below the Koneswaram Temple. Conditions vary significantly, with visibility ranging from 5 to 30 metres and currents that can be strong. Access is by boat only. Hazards include surf, strong currents, and the presence of lionfish, sharks, and stonefish. Facilities available include air fills, equipment rental, guided tours, showers, and changing rooms.