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Photo of a Clown Dorid

Species profile

Clown Dorid

Triopha catalinae

Sea slugs/nudibranchs5.2K iNat observations

At a glance

Clown Dorid (Triopha catalinae) 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 4,970 research-grade iNaturalist observations, with California, Oregon, and British Columbia the top jurisdictions by observation count.

Notable details

  • The Clown Dorid is a nudibranch — it carries no protective shell as an adult.
  • It feeds almost exclusively on bryozoans, colonial invertebrates that coat rocks and kelp.
  • Found from Alaska to Baja California, it lives in rocky intertidal and subtidal habitats.
  • Adults can reach up to 5 centimeters, making them one of the larger nudibranchs on the Pacific coast.
  • Like most nudibranchs, it typically lives for about one year.

Background

Triopha catalinae, commonly known as the sea clown triopha, is a species of colorful sea slug, a nudibranch, a shell-less marine gastropod mollusk in the family Polyceridae.

Background excerpt adapted from Wikipedia's Clown Dorid article (CC BY-SA). Visit Wikipedia for the full entry.

Photo credit: iNaturalist / Wikipedia. Identification reference only — verify regulations with the issuing wildlife agency before retaining a catch.