3/5 (3)

Trio Island

About The Site

Trio Island is located near the mouth of Port Shelter, off the eastern coasts of the Clearwater Bay Peninsula. The island consists of three islets, possibly explaining the site’s name. The principal dive sites are situated on the northwest of the three islets. The water is about 10 m deep on average and is relatively easy to dive in. On calmer days with no strong currents, the southern side of the island might also allow vessels to anchor for diving. The southern waters can reach over 20 m deep and are closer to the waterways of the island’s east coast, so extra caution and adequate diving experience are advised. Channels between the islets can be swum across, but their relatively complex structure might be difficult to navigate and divers should be aware of the dangers of standing and strong currents.

The dive site’s bottom substrate consists primarily of rocky reefs on a sandy substrate mixed with gravel. Small colonies of hard and soft corals are sparsely distributed, but corals of over 2 m in diameter are present. At greater depths, even gorgonian corals and symbiotic reef shrimps can be found. The waters on the northwest at 5 – 10 m deep are characterized by a large coverage of anemone inhabited by anemonefishes, and if lucky, frogfishes as well. Near shore, Stellar rockhoppers can be spotted taking refuge in empty barnacle shells. Besides common reef fishes such as demoiselles, cardinalfishes, various pufferfishes, the U-mark sandperch, Marbled rockfish, Painted sweetlips, and moray eels. Trio Island is also home to scorpionfishes, Threespot dascyllus, cowries, nudibranchs, sea stars, and even schools of Kawakawa have been recorded at the site.

Soft Coral & Gorgonian: Yes

AFCD Coral Area Anchor: No

Marine Protected Area: No

Sandy / Rubble Habitat: Yes

Rock / Boulder Habitat: Yes

Anemone Garden: Yes

Deep water areas (> 18m): Yes (towards the south)

Surface Traffic: Fairways lie on the east, bringing busy maritime traffic

Mobile Signal: Yes

Muddy / Silty Habitat: No

AFCD HK Artificial Reef Project: No

Beach: No

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1 = Simple, 5 = Difficult

Total Cumulative Species Count: 175

Suggested Boarding pier: Sai Kung Pier or Pak Sha Wan

Distance from Suggested Boarding Pier: 10 km from Sai Kung Pier or Pak Sha Wan