Small internal shell and a purple body with wide orange-margined side lobes, making it one of the most distinctive of all opisthobranchs. The species is generally found attached to the bottom in the vicinity of a grey sponge, but can also swim, which it does rarely by flapping the side lobes in a slow bat-like motion. Although this sea slug is not abundant, it is well known to divers because its bright colouration attracts attention.

• Max Size: 3 cm
• Sea Temperature Range: 12.5-24.7°C
• Depth: 0-20m
• Habitat: Rocky Reef

• IUCN Threat Status: Not Evaluated
• Occurrence: Infrequent (6% of sites)
  Occurrence describes how often the species is found on surveys within its distribution. It is calculated as the % of reef sites surveyed by RLS divers across all the ecoregions in which the species has been observed
• Abundance: Few (2 per transect)
  Abundance is calculated as the average number of individuals recorded per RLS transect, where present.