Lembeh — 12 September 2025
- Location seen
- Lembeh, Indonesia
- Date seen
- 2025-09-12
Marioniopsis arborescens
© Di Syrett / MacroDivers.com
About this species
- Current scientific name
- Marioniopsis arborescens
- Previous genera
- Marionia
- Order
- Nudibranchia - Cladobranchia
- Type
- Dendronotina (Dendronotinids)
- ID confidence
- Probable
- Genus
- Marioniopsis
- Species
- arborescens
- Average size
- 65 mm
- Colours
- yellow, orange, brown, green, cream
- Pattern
- Mottled, Tubercles, Blotches
- Body shape
- With Appendages
- Rhinophores
- Ornate/Complex
- Gills
- Cerata
Geographic Distribution
Indian and western Pacific Oceans.
Identification
Large nudibranch with a wide range of colour variations based on the specific soft coral they feed on. The dorsal surface is broad and covered in small round bumps/tubercles. The secondary branchial gills look like branches of a tree are usually found in four or five pairs. The rhinophores are highly branched that can withdraw into a protective basal sheath. The front of the head has finger-like tentacles.
Behaviour / Habitat
Found in sand and rubble. Feeds on soft corals and cnidarians.
General Notes
Was known as Marionia arborescens but now officially accepted as Marioniopsis arborescens.
Our Sighting
About our records
All sightings and photographs on this page are from our own dives. Locations shown are places where we have personally recorded this species. About MacroDivers.