Goniobranchus tumuliferus (Collingwood, 1881) Figure 10F

Material examined.

Two specimens 10-15 mm, CP.

Ecology.

Predominantly found among coral and rock at an offshore submerged pinnacle site. Also sparsely recorded from the deeper soft sediment habitats near the island. Depth 11-25 m.

Distribution.

Across the western Pacific including Vietnam (Martynov and Korshunova 2012), the Philippines, Japan, Australia, and New Caledonia (Gosliner et al. 2008). Known from the Gulf of Thailand (Jensen 1998; Chavanich et al. 2013).