Species profile
Black and White Dorid
Acanthodoris rhodoceras
At a glance
Black and White Dorid (Acanthodoris rhodoceras) is a sea slug present across the CatchRules coverage area but without species-specific bag, size, or season rules tracked in our regulatory dataset.
Confirmed by 2,167 research-grade iNaturalist observations, with California, Oregon, and British Columbia the top jurisdictions by observation count.
Notable details
- A small dorid nudibranch found along the Pacific coast from Alaska to Baja California.
- Feeds on bryozoans and locates them using chemosensory rhinophores on its head.
- Lays spiral ribbons of eggs directly on the bryozoan colonies it feeds upon.
- Like all nudibranchs, it lacks a protective shell and relies on chemical defenses instead.
Where Black and White Dorid are seen
Background
Acanthodoris rhodoceras is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusc in the family Onchidorididae.
Background excerpt adapted from Wikipedia's Black and White Dorid article (CC BY-SA). Visit Wikipedia for the full entry.
Other sea slugs/nudibranchs on CatchRules
Photo credit: iNaturalist / Wikipedia. Identification reference only — verify regulations with the issuing wildlife agency before retaining a catch.