
Common Periwinkle - Littorina littorea
A common winkle along the Maine coast. I found lots of them along the coast during low tide.
It had a blunt spire, pale columella, and was about 25 mm long.
Periwinkles are vegetarians and can withstand long periods of time without food or water.

The common periwinkle or winkle is a species of small edible whelk or sea snail, a marine gastropod mollusc that has gills and an operculum, and is classified within the family Littorinidae, the periwinkles.
Similar species: Littorinimorpha
By Christine Young
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Uploaded Jun 21, 2018. Captured Jun 18, 2018 08:01 in 1 ME-99, Kennebunk, ME 04043, USA.