Best Littorinidae
Updated Daily
The Common Periwinkle is a marine sea snail native to the rocky coasts of Europe that was introduced to North America in the 1800s and now dominates the intertidal zone.
The Rough Periwinkle is a resilient marine gastropod inhabiting North Atlantic rocky shores, highly valued in evolutionary biology for its distinct local ecotypes.
The Flat Periwinkle is a North Atlantic marine snail notable for its distinctively flattened shell, an evolutionary adaptation that protects it from strong waves.
Inhabiting the high intertidal zones of the North American Pacific coast, the Eroded Periwinkle is a marine snail whose shell apex is naturally worn down.
Small intertidal gastropod native to the Pacific coast of North America, notable for its checkered brown-and-white shell pattern and tolerance of variable salinity on rocky shores.
