species 2,009 observations
Mangrove Periwinkle
Littoraria angulifera
Field notes
Littoraria angulifera or the mangrove periwinkle is a species of sea snail, a marine gastropod mollusc in the family Littorinidae, the winkles.
Read more on WikipediaRange
Greener is more native, amber more introduced; paler is less certain. How this was decided