I was excited to find this new isopod, Idotea stenops, or Feather Boa Isopod, aka Seaweed Isopod. Indeed it was not on Feather Boa Kelp, it was found on some red seaweed at low tide. This isopod is about 1" long, a dark army green.
caught in a sane net, mixed with seaweed
Constellation Marine Reserve, West Seattle, WA. Southern end of the park.
Idotea is a genus of isopod crustaceans, mostly from cold temperate waters. The taxonomy of the genus is still in doubt, and many of the currently recognised species may be taxonomic synonyms, and others may be moved to different genera. The genus Idotea includes the following species: