Fragile Pink Sea Urchin

Fragile Pink Sea Urchin (Strongylocentrotus fragilis)

Pom-pom anemone, pink sea urchin, and brittle stars on the seafloor at the Oregon Offshore site (600m depth). Credit: UW/NSF-OOI/WHOI, Dive J2-1170, V19

Commonly seen at the Oregon Offshore and Slope Base sites, S. fragilis is a regular sea urchin (meaning it is roughly spherical with a ventral mouth and an anus on the dorsal surface). This species is slightly flattened, and usually has a pale pink coloration and short, thin white spines. They are distributed across the continental shelf and slope off the west coast of North America, generally in waters below 200 meters.

References:
https://en.wikipedia.org/wiki/Strongylocentrotus_fragilis