Cerithiopsis stejnegeri
Dall, 1884
On the underside of the encrusting sponge
Halicondria panicea
, intertidal, Gertude Cove, Vega Bay, Kiska Island, 12 July, 2002 (about 4-5 mm.)
Taken by NOAA/NMFS chartered fishing vessel R/V Vesteraalen