Mantle - fold of outer skin lining shell or enclosed to create a cavity. excretes shell.
Gills - flaps of mucus covered membrane that take oxygen out of the water
Foot - a muscular foot, used for locomotion.
Shell - a hard protective surface enclosing many molluscs
Radula - Chitin enforced tongue used to scrape of food.
Visceral Mass - mass containing digestive, circulatory, respiratory, and nervous systems
Open Circulatory System - Blood does not always flows within blood vessels
Closed Circulatory System - Blood always flows within blood vessels
Filter Feeder - feeds my means of sucking in water, removing small particles for digestion
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