A periwinkle in the foreground with a trail stretching into the background.

Periwinkle goes for a walk

Wait for me! A common Periwinkle makes its way down to the tide on Dollar Bay and leaves quite an impressive trail as it does so. They don’t normally wander too far from their habitats but in order to lay their eggs, they must make this long, arduous trek (in snail-pace terms anyway!)