Common Marsh Snail

Melampus bidentatus

Closeup image of a common marsh snail against a plain black background.

Image by Robert Aguilar, Smithsonian Environmental Research Center on Flickr, CC BY 2.0

Physical: Marsh Snails are univalves that grow to approximately 1.5 cm.  They are top shaped and have dark bands around their white shells.  Color variations are common.

Habitat: M. bidentatus are found in marshes along the estuaries of the east coast of the United States.  The marshes are primarily intertidal.

Feeding: M. bidentatus are scavengers, and feed on dead or decaying matter in the marsh such as decayed fish and plant matter.

Breeding: The Common Marsh Snails produce egg cases that hatch a few weeks after being fertilized.  The young are miniature versions of the adults, and are independent from the time they are hatched.

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