Identificaciones de ethanroberts

Dark brown, and relatively large (about 1/2" long). Found both on the underside of the same rubber dock float. Rolled up in a ball when picked up, pill-bug style, but unrolled relatively quickly. Looked like they came straight from a Miyazaki movie! Sketchy initial ID as per http://tolweb.org/notes/?note_id=4182 (does anyone want to look them up for me in the Light Manual?). However they are solid dark brown, not mottled, as other iNat obs of this species have been.

Infested with several smaller grey isopods visible in some of these photos (assuming parasitic from behavior); see separate observation for them.