Sibuan Island

Sibuan Island is a teardrop-shaped sand cay nicknamed The Battleship, sitting in the western sector of its marine park. A central grove of coconut palms is flanked by tapering white sand spits whose sandbars shift with the tide throughout the day. Known as the muck-diving capital of the park, the site's named dive spots include Left Shoulder, Mandarin Point, Mandarin Bay, Froggy's, and The Drop-Off, among others.

Below the surface, the sandbanks transition into gentle coral drop-offs and sandy channels, with sloping coral gardens and rubble patches running from 5 m to a maximum of 25 m. The terrain is well suited to mixed-ability groups: snorkellers can work the top of the reef while divers descend the slope, with the boat anchoring in the shallows to accommodate both.

The rubble and muck habitat is productive hunting ground for frogfish and ornate ghost pipefish, and named sites such as Mandarin Point and Mandarin Bay suggest reliable mandarinfish encounters in the right conditions. Green turtles and ribbon eels are also recorded at the site.