Location: Lonos, Romblon Island
Depth: medium depth
Cover Photo: Murat Vapurcu
Scientific Name: Marionia arborescens, Bergh, 1890
Family: Tritoniidae
Marionia arborescens is greenish brown and has numerous tubercles on the dorsal surface. The secondary gills of this species are highly branched. As most members of the Tritoniidae family M. arborescens feeds on soft corals and can be observed in the reefs around Romblon Island.