Found in low, sheltered tidal marshes and wetlands, usually living on needlerush and saltmarsh cordgrass stalks. Littoraria irrorata, common name the marsh periwinkle, is a species of sea snail, a marine gastropod mollusk in the family Littorinidae. Marsh periwinkles grow to 1 inch in length. (Photo by Will Parson/Chesapeake Bay Program)Marsh periwinkles cling to saltmarsh cordgrass (Spartina alterniflora) at Money Point in Chesapeake, Va., on Oct. 25, 2015. The marsh periwinkle is a small snail with a thick, spiraling shell. Reddish-brown flecks appear on the spiral ridges of the shell.
Their spiraling, grooved shell has a slightly pointed spire and varies in color from grayish-white to tan. Reddish-brown flecks appear on the spiral ridges of the shell.
It lives in tidal marshes and wetlands throughout the middle and lower Chesapeake Bay. The marsh periwinkle grazes on algae and detritus on the surface of plants and the ground. The specific epithet irrorata means 'moistened' or 'dewy.' Found in low, sheltered tidal marshes and wetlands, usually living on needlerush and saltmarsh cordgrass stalks.Get the latest updates on our work delivered to your inbox.The Chesapeake Bay Program is a unique regional partnership that has led and directed the restoration of the Chesapeake Bay since 1983.© 2020 Chesapeake Bay Program All Rights Reserved Their spiraling, grooved shell has a slightly pointed spire and varies in color from grayish-white to tan. Marsh periwinkles grow to 1 inch in length.
Periwinkles rise and fall with each tide, feeding on algae growing on the blades of grass. (Photo by Will Parson/Chesapeake Bay Program) Marsh periwinkles lay individual eggs into the water. Eggs hatch into free-swimming larvae, which develop into small snails in mid-summer. Blue crabs, mud crabs and terrapins prey upon marsh periwinkles. Money Point is the site of wetlands restored by the Elizabeth River Project. Marsh periwinkles cling to saltmarsh cordgrass at Money Point in Chesapeake, Va., on Oct. 25, 2015. It will avoid predators by climbing up marsh grass stalks.
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marsh periwinkle diet