The Badaiwan Wreck is an artificial reef located off Lanyu, Taiwan, resting at depths between 20 and 38 metres. This site is suited for advanced divers due to the overhead environment, potential for strong currents, and deep profile. Visibility ranges from 20 to 50 metres, allowing for clear views of the structure. Access is by boat only. Divers must manage buoyancy carefully to avoid entanglement risks within the wreck. A dive torch is essential for penetration and night diving. Water temperatures remain between 25 and 29 degrees Celsius throughout the year, typically requiring a 3 mm wetsuit.

Uren Harbor is a sheltered bay on Lanyu, Taiwan, featuring a combination of shallow reef structures and seagrass beds. Divers can explore this site at depths ranging from 10 to 15 metres. The location offers visibility between 20 and 50 metres, providing clear views of the underwater topography. Water temperatures remain between 25 and 30 degrees Celsius throughout the year. Entry is via the shore, and divers should be prepared for moderate currents. Due to the presence of sharp coral and potential for entanglement with bottom growth, careful buoyancy control is required. The site is suitable for beginners, with typical dive times lasting approximately 45 minutes.

DongQing Bay on the eastern shore of Lanyu features a reef and drop-off topography accessible directly from the shore. The reef starts at approximately 5 metres, transitioning into a drop-off that extends to 30 metres. With visibility ranging from 20 to 50 metres, the site is suitable for intermediate divers. Water temperatures remain between 25 and 29 degrees Celsius. Divers should be aware of moderate currents that can strengthen unexpectedly, making slack water around the tide turn the most manageable time for entry. Night diving is permitted. On-site facilities include parking, toilets, showers, changing rooms, a rinse station, air fills, and equipment rental.

Badaiwan is a deep-water site off Lanyu featuring a combination of wreck and canyon topography. The site lies at depths between 38 and 41 metres, with the wreck structure itself located between 17 and 22 metres. Visibility is high, ranging from 30 to 50 metres, allowing for clear views of the canyon walls and wreck during descent. Due to the depth, overhead environments, and potential for moderate currents, this site is suitable only for advanced divers. Boat access is required. Divers should monitor their depth closely and avoid entering enclosed internal areas of the wreck. Guided tours are recommended to navigate the canyon layout effectively.

Guandongshi is a reef and wall site located on the outer reef of Lanyu. The topography features a wall dropping from 15 to 45 metres, with an average depth of 30 metres. This site requires boat access and is suited for intermediate divers with drift-diving experience. Conditions include strong, shifting currents and visibility ranging from 20 to 50 metres. Divers should be aware of sharp coral and rock edges, necessitating good buoyancy control. Due to the strong flow, timing descents for slack water or the early incoming current is recommended. An Advanced Open Water certification or equivalent is required to navigate this site safely.

Sankuaishih is a marine dive site off the coast of Lanyu, Taiwan, featuring a shallow reef top that transitions into a wall and drop-off. The topography descends from 5 metres to depths exceeding 30 metres, with an average depth of 20 metres. Divers encounter moderate currents that require solid buoyancy control. Visibility is variable, ranging from 20 to 50 metres. Access is by boat only, and the site is suitable for intermediate divers. Night diving is available through local operators. Due to the potential for strong currents and boat traffic, divers should maintain awareness of their surroundings and plan their dives to work into the current.

Jichangwaijiao is a reef site located off the coast of Lanyu, Taiwan, offering diving from the surface to a depth of 30 metres. Access is exclusively by boat, and the site is known for strong currents that require careful planning around slack water. Water temperatures remain between 25 and 29 degrees Celsius throughout the year. Visibility is variable, and divers should remain aware of boat traffic when surfacing. Species recorded around this area include sea kraits, regal angelfish, clown triggerfish, nudibranchs, and various wrasses. Due to the challenging current conditions, this site is best suited for experienced divers who can manage variable underwater environments.

Green Field is a boat-access dive site off Lanyu, Taiwan, characterised by shallow reef terrain. The site features a wall that extends to 70 metres, requiring divers to monitor their depth gauge closely. Conditions are variable, with strong currents that can shift quickly and push divers off the reef. Marine life recorded at the site includes wrasses, groupers, Pacific Orange-spine Unicornfish, rock cod, Powder-blue Surgeonfish, Striped Surgeonfish, Bird Wrasse, Moorish Idol, Indo-Pacific Sergeant Major, hawkfish, Lined Bristletooth, and snails. Due to the potential for strong currents and the depth of the wall, this site is suitable for intermediate divers who possess strong buoyancy control.