Marta Nemes Horacek

Marta Nemes Horacek

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Beginner Shell Guide - Coastal Living...http://www.coastalliving.com/lifestyle/the-environment/gastropod-shells

Conical shells may be smooth or ribbed, round or narrow at the base, and may reach 4 inches in diameter. Keyhole limpets have a hole or slit near the apex of their shell.