Inhambane — 24 October 2025
- Location seen
- Inhambane, Mozambique
- Date seen
- 2025-10-24
Goniobranchus geminus
Gem nudibranch
© Di Syrett / MacroDivers.com
About this species
- Current scientific name
- Goniobranchus geminus
- Common name
- Gem nudibranch
- Previous genera
- Chromodoris
- Order
- Nudibranchia - Doridoidea (Dorids)
- Type
- Cryptobranchia (Cryptobranch dorids)
- ID confidence
- Confirmed
- Genus
- Goniobranchus
- Species
- geminus
- Average size
- 35 mm
- Colours
- white, yellow, purple, grey
- Pattern
- Spots, Edged mantle
- Body shape
- Oval
- Rhinophores
- Horizontal
- Gills
- External gill plume
- Similar species
- Goniobranchus kuniei, Goniobranchus leopardus
Geographic Distribution
Indian Ocean.
Identification
Attractive nudibranch - yellow dorsum with dark spots ringed in white. The mantle is white, dark grey merging into light grey and then golden yellow. The pinnate gills (yellow and grey) and lamellate rhinophores (yellow) are both retractable.
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.