Atlantic Dog whelk, on the coast of MaineMarine Environmental Research Institute, Blue Hill, MaineJunior Internship ProgramNew England Aquarium Summer Science ProgramNaGISA Sampling, Summer 2010
Prominent flanges serve to strengthen the shell. A 'tooth' near the aperture may be used to pry open bivalves. And the radula is used to bore through calcareous shells of prey such as barnacles and bivalve.