Species profile
Hopkins' Rose Nudibranch
Ceratodoris rosacea
At a glance
Hopkins' Rose Nudibranch (Ceratodoris rosacea) 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 8,429 research-grade iNaturalist observations across the species' range.
Notable details
- One of the most intensely pink animals found in California's coastal waters.
- Feeds almost exclusively on the bryozoan Eurystomella bilabiata.
- Its vivid magenta color is derived directly from pigments in its bryozoan prey.
- Typically reaches only about 1 to 2 inches in length.
- Found in rocky intertidal and subtidal habitats along the California coast.
Where Hopkins' Rose Nudibranch are seen
Background
Hopkin's rose nudibranch is a species of sea slug, specifically a dorid nudibranch, a marine gastropod mollusc in the family Goniodorididae. Previously known as Okenia rosacea, this species was reclassified as Ceratodoris rosacea in 2024.
Background excerpt adapted from Wikipedia's Hopkins' Rose Nudibranch 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.