Berthellina citrina
(Rüppell & Leuckart, 1828)
Also known as: Pleurobranchus granulatus, Pleurobranchus punctatus, Pleurobranchus delicatus, Pleurobranchus angasi, Berthella brocki, Pleurobranchus cuvieri, Berthella minor, Berthella borneensis, Berthella gotoi

Photographed by: Guido Zsilavecz
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Opisthobranchia |
| Order: | Notaspidea |
| Family: | Pleurobranchidae |
| Species: | Berthellina citrina |
Comment from Richard Willan on photo #665
This species of side-gilled sea slug apparently has a wide distribution throughout the Red Sea, Indian Ocean and Pacific Ocean.Locality:
- South Africa
- Cape Town (6)
- Australia
- Queensland (1)
- Fremantle (1) May
- Nelson Bay (1)