Key Identification Features
- Like other species in the genus Chelidonura, it has two distinct fairly long tails at the posterior end of its body, and the left tail is always longer.
- It is relatively broad for its length, and has a broad headshield with a distinct hump.
- The coloration of this sea slug is very distinctive: it is dark brown or black, with a thin, bright blue border along its shields, posterior lobes and parapodia.
- Another similar species is Philinopsis speciosa, but this species lacks the distinctive head hump, and has a noticeable pointed extension at the posterior end of its headshield.
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