Systellommatophora Pilsbry 1948

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

The eyes are on stalks or tentacles. The tubercles or papillae along the lateral margins of the dorsum, which secrete substances noxious to seastars, are also clearly visible.

Onchidella borealis, 11 mm long, crawls along a blade of sea lettuce. Found intertidally at Cape Flattery. (Photo by: Dave Cowles July 2007)