Eel Valley is a pinnacle and reef site located off Tomia Island. The topography drops from a shallow reef top at 6 metres down to a maximum depth of 45 metres. Divers should be prepared for variable conditions, as currents are generally mild but can strengthen with little warning, particularly at depth. Visibility ranges from 10 to 30 metres. Due to the depth and potential for changing currents, this site is suitable for advanced divers only. Access is by boat, and divers must confirm surface pickup arrangements with their skipper before descending. Water temperatures remain between 26 and 30 degrees Celsius throughout the year.

Ali Reef on Tomia Island features a shallow reef top that transitions into a dramatic drop-off reaching depths of 45 metres. With visibility ranging from 20 to 60 metres, the site offers expansive views of the wall structure. Divers should expect moderate currents, which require intermediate skill levels and careful planning around tidal cycles. Boat access is mandatory for this site. While sharks are present along the drop-off, species recorded around this area include the Broadclub Cuttlefish, Giant Moray, Spotfin Lionfish, and various butterflyfish and anemonefish. Divers should follow guide briefings regarding drift direction and current management to ensure a safe experience.

Roma Reef is a submerged pinnacle located near Tomia Island, Indonesia. The site is defined by its large potato coral formations. Divers and snorkellers can explore depths ranging from 2 to 25 metres, with an average depth of 15 metres. Visibility typically spans 15 to 30 metres. The site is accessible only by boat and is suitable for beginners, though currents can be moderate. Hazards include sharp coral and strong currents. Species recorded around this area include Indian Lionfish, various nudibranchs, Day Octopus, moray eels, Crocodile Fish, Bluespotted Fantail Ray, Clown Triggerfish, Broadclub Cuttlefish, Leaf Scorpionfish, and several angelfish species.

Gunung Waha on Tomia Island is a diverse dive site featuring a reef, wall, drop-off, and pinnacle. The site ranges from 6 to 50 metres in depth, with an average of 25 metres. Visibility typically spans 15 to 30 metres. Divers should expect moderate currents that can strengthen quickly, requiring careful monitoring of position and depth. Due to the depth and current conditions, this site is suited for intermediate divers with an Advanced Open Water certification. Access is by boat only, and dives typically last 60 minutes. Divers are advised to coordinate with local operators to time dives with incoming currents for the best experience.

Mari Mabuk is a diverse dive site off Tomia Island featuring a combination of reef, wall, and pinnacle topography. The site offers depths ranging from 20 to 80 metres, with visibility consistently reaching 30 metres. Divers access the site by boat. While currents are generally mild, they can strengthen quickly, requiring divers to remain close to their guide and monitor conditions closely. The water temperature typically ranges between 24 and 28 degrees Celsius. Due to the significant depth profile, divers should manage their profiles according to their certification limits, focusing on the shallower sections of the reef.

Roma is a reef and pinnacle site located off Tomia Island, Indonesia. This site is accessed by boat and features depths ranging from 15 to 25 metres. Divers and snorkellers can expect moderate currents, which facilitate drift diving along the reef structure. Visibility at the site typically ranges between 25 and 30 metres, with water temperatures remaining between 27C and 30C throughout the year. Due to the potential for currents to strengthen quickly, it is recommended to follow your guide and remain with the group. Stonefish are present, so avoid contact with the seabed or rocky surfaces.

Koilo-Soha Beach on Tomia Island offers a diverse underwater landscape featuring reef, wall, and seagrass habitats. Suitable for beginners, the site ranges from 10 to 30 metres in depth, with an average of 15 metres. Visibility typically spans 15 to 30 metres. Access is by boat, and while currents are generally mild, they can strengthen unexpectedly. Guided tours are available, and the site is suitable for night diving. Water temperatures remain warm throughout the year, ranging from 27 to 30 degrees Celsius.

Teluk Waitii on Tomia Island features a combination of a gently sloping reef, a wall, and a drop-off. This site is suitable for beginners, with depths ranging from 15 to 40 metres, though shallower sections provide ample exploration for those building confidence. Divers experience mild currents and visibility between 10 and 30 metres. Access is by boat only, with dives typically lasting 45 minutes. Water temperatures remain between 26 and 30 degrees Celsius throughout the year. Species recorded around this area include various nudibranchs, lionfish, rays, scorpionfish, octopus, triggerfish, angelfish, moray eels, and cuttlefish.