Northern lame crab

Pugettia productus

"Pugettia productus", known as the northern lame crab or shield-backed kelp crab, is a species of crab in the family Epialtidae.
Pugettia producta, The Northern Kelp Crab or the Shield-backed Kelp Crab I don’t know what the collective noun for crabs is but it might of been helpful in this case. Doing the research I did find that the scientific name seems to be P. producta and not P. productus. Canada,Geotagged,Northern Kelp Crab,Northern lame crab,Pugettia producta,Shield-backed Kelp Crab,Summer

Appearance

Dark brown coloured with carapace shaped like a police officer's badge or shield. As the name suggests, it feeds on kelp. Size to 9 cm across the carapace.
Kelp Crab Geotagged,Pugettia productus,Summer,United States

Distribution

Found along the Pacific Coast from southern Alaska to northern Mexico.

References:

Some text fragments are auto parsed from Wikipedia.

Taxonomy
KingdomAnimalia
DivisionArthropoda
ClassMalacostraca
OrderDecapoda
FamilyEpialtidae
GenusPugettia
SpeciesP. productus
Photographed in
Canada
United States of America