CatchRules

Home · Species · Northern Kelp Crab

Photo of a Northern Kelp Crab

Species profile

Northern Kelp Crab

Pugettia producta

Crabs/lobsters/shrimp15.0K iNat observations

At a glance

Northern Kelp Crab (Pugettia producta) is a crustacean present across the CatchRules coverage area but without species-specific bag, size, or season rules tracked in our regulatory dataset.

Confirmed by 14,595 research-grade iNaturalist observations, with California, British Columbia, and Washington the top jurisdictions by observation count.

Notable details

  • Can reach a carapace width of about 3.7 inches (9.4 cm) and delivers a surprisingly painful pinch.
  • Its color shifts from olive green to dark red-brown depending on the algae in its diet.
  • Ranges from British Columbia to Baja California, from the intertidal zone down to about 75 meters.
  • Feeds primarily on kelp and other algae, making it an important herbivore in kelp forest ecosystems.
  • Females carry orange egg masses under the abdomen for several months until the eggs hatch.

Background

Pugettia producta, known as the northern kelp crab or shield-backed kelp crab, is a species of crab in the family Epialtidae.

Background excerpt adapted from Wikipedia's Northern Kelp Crab 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.