Cross Line is a reef site located off Tokashiki Island, Japan, reaching depths of 21 metres. This site is accessed exclusively by boat and features mild currents, making it suitable for beginner divers. The topography consists of reef structures interspersed with sand patches and rubble. Divers should focus on slow, patient observation to spot cryptic marine life. Species recorded around this area include various wrasses, anemonefish, and moray eels. Visibility can be variable, so it is recommended to check local conditions before departure. Divers are encouraged to consult with their boat crew to identify likely hiding spots for small, camouflaged creatures before beginning their descent.

Diamond Beach, also known as Nakayukui, is a reef site located on Tokashiki Island in the Kerama Islands. Accessible directly from the shore, the site features a mix of sandy patches and dense coral heads. It is well-suited for beginners, with mild currents and calm conditions generally prevailing. Snorkellers can explore the reef area up to 200 metres from the beach. Facilities at the site include a cafe and equipment rental services. While the water is generally calm, visitors should remain aware of potential rip currents. Water temperatures range from 22C in the winter months to 29C during the peak summer season.

Serakaki Beach on Tokashiki Island offers shore access to a limestone reef structure that develops significantly as you swim further from the coast. The site features a mix of reef and drop-off topography, characterised by ledges and cracks within the limestone. Depths range from 5 to 30 metres, with an average depth of 10 metres. Conditions vary, with visibility typically between 5 and 20 metres and moderate currents. The site is suitable for beginners and provides facilities including parking and showers. Divers should be aware of sharp coral present in the area. Typical dives last approximately 60 minutes, and the site is also suitable for snorkelling.

Overhead Rock is a dynamic site located 2000 metres off Tokashiki Island, featuring a combination of reef, wall, and cave structures. Divers can explore depths ranging from 8 to 30 metres, with an average depth of 20 metres. Visibility at this site typically reaches 20 to 30 metres. Due to moderate currents and the complexity of the cave and wall sections, this site is suited for intermediate divers. Boat access is required for all dives. Divers should remain vigilant regarding potential entanglement risks within the cave passages and be aware of the presence of sharks in the area. All necessary facilities, including air fills and boat charters, are available at the departure point.

Manza Chapel is a diverse marine site featuring a combination of reef, wall, and cave topography. Divers can explore dramatic drop-offs and underwater caves that reach depths of up to 40 metres, with an average depth of 25 metres. Entry is possible from both the shore and by boat, with a collapsed staircase leading to a pier for quick access to deeper water. Conditions vary, with moderate currents and visibility typically ranging between 15 and 30 metres. The site is suited for intermediate divers due to the deep water and overhead environments. Facilities at the location include parking, toilets, showers, equipment rental, and air fills.

Manza Dreamhole is a complex marine site off Tokashiki Island featuring a combination of reef, cave, wall, and drop-off topography. Divers typically explore depths ranging from 5 to 40 metres, with an average depth of 25 metres. Access is by boat only, and the site is suited for advanced divers due to potential strong currents and surf conditions. Visibility is generally high, ranging between 25 and 40 metres. Marine life observed at the site includes whitetip reef sharks, Indian lionfish, Clark's anemonefish, and various nudibranchs such as the Chromodoris, Varicose wart slug, and Heavenly wart slug. Other residents include wrasses, soldierfish, sea stars, crabs, and elongate clams.

Toilet Bowl on Tokashiki Island is a complex dive site featuring a mix of reef, wall, and cavern topography. Suited for advanced divers, the site is known for strong, shifting currents that may necessitate an exit away from the entry point. Entry and exit are challenging, requiring navigation over sharp limestone rocks. Divers can observe a variety of marine life, including Whitetip Reef Sharks, Turkey Moray, Indian Lionfish, Day Octopus, and Chromodoris Nudibranch. Other species recorded here include Clark's Anemonefish, Elongate Clam, Cinderella Sea Slug, Pacific Sailfin Tang, various wrasses, Pacific Trumpetfish, flatworms, Heavenly Wart Slugs, and common sea stars. Depths range from 9 to 12 metres with visibility between 9 and 24 metres.

Manzamo on Tokashiki Island features a diverse topography of reef, wall, and cave systems ranging from 5 to 30 metres in depth. Visibility is high, typically between 20 and 40 metres. Divers may encounter whitetip reef sharks, day octopuses, Indian lionfish, and turkey morays, alongside various nudibranchs, flatworms, and anemonefish. The site requires boat access and is suited for intermediate divers due to moderate currents and an overhead cave environment. Proper buoyancy control is essential when navigating the wall and cave sections. Local facilities include air fills, equipment rental, and showers, supporting multi-dive days.