Echinolittorina mespillum is a species of sea snail, a marine gastropod mollusc in the family Littorinidae, the winkles or periwinkles.
Aruba, Bonaire, Caribbean Sea, Cayman Islands, Colombia, Cuba, Curaçao, Gulf of Mexico, Jamaica, Lesser Antilles, Mexico, Puerto Rico
The maximum recorded shell length is 10 mm.
Minimum recorded depth is âÂÂ2 m. Maximum recorded depth is 0 m.