Lembeh — 9 September 2025
- Location seen
- Lembeh, Indonesia
- Date seen
- 2025-09-09
Thorunna australis
© Di Syrett / MacroDivers.com
About this species
- Current scientific name
- Thorunna australis
- Order
- Nudibranchia - Doridoidea (Dorids)
- Type
- Cryptobranchia (Cryptobranch dorids)
- ID confidence
- Confirmed
- Genus
- Thorunna
- Species
- australis
- Average size
- 15 mm
- Colours
- white, blue, orange, purple, pink
- Pattern
- Spots, Stripes
- Body shape
- Oval
- Rhinophores
- Horizontal
- Gills
- External gill plume
- Similar species
- Hypselodoris decorata, Hypselodoris paradisa, Hypselodoris maculosa
Geographic Distribution
Indo-Pacific.
Identification
Pretty nudi with simple (normally no more than six plumes) non-retractable gills. Non-retractable lamellate rhinophores that are transparent at the base, white with a single orange band.
General Notes
May be mistaken for Hypselodoris but the one band around the rhinophores and the fact that they are non-retractable may help with identification. The adult is also smaller than an adult Hypselodoris - but may be mistaken for a juvenile.
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.