Knobbed whelk (Busyon carica)
	Remnants of the knobbed whelk can be found scattered across Cape Cod and other eastern beaches. The whelk is a member of the phylum Mollusca which also includes the squid and octopus. Unlike those shell-less creatures, the whelk is a 'Gastropod': it lives inside a single spiral shell which it can retreat into for protection. Gastropod literally means 'belly foot' which refers to the fact that its internal organs are covered by a thick muscular tissue or foot which it also uses to drag itself across the sand.
	Technique: Watercolor and colored pencil
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