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Photo of a Colorful Dirona

Species profile

Colorful Dirona

Dirona picta

Sea slugs/nudibranchs2.9K iNat observations

At a glance

Colorful Dirona (Dirona picta) 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 2,850 research-grade iNaturalist observations, with California, Oregon, and British Columbia the top jurisdictions by observation count.

Notable details

  • A Pacific nudibranch in the same genus as the White-lined Dirona but far more brilliantly colored.
  • Found along rocky shores of the Pacific coast from British Columbia to Baja California.
  • Like all nudibranchs, it is a simultaneous hermaphrodite, able to act as both sexes when mating.
  • Feeds on small invertebrates such as bryozoans and hydroids found on rocky surfaces.

Background

Dirona picta, common name colorful dirona, is a species of sea slug, an Eastern Pacific Ocean nudibranch, a marine, opisthobranch gastropod mollusk in the family Dironidae.

Background excerpt adapted from Wikipedia's Colorful Dirona 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.