Definition
A winkle is simply another name for a periwinkle, a small sea snail commonly found in the intertidal zone. These snails belong to the family Littorinidae and are known for their ability to tolerate fluctuating conditions. Winkles graze on algae and are an important part of the intertidal food web. Think of them as the tiny recyclers of the rocky shore. They help keep the ecosystem clean and healthy. Their shells often have a spiral shape.