Cepaea nemoralis

Cepaea nemoralis, the grove snail, brown-lipped snail or lemon snail, is an air-breathing land snail and one of the most common large land snails in Europe. Its rounded shell, up to about 25 millimetres wide, is famous for its variety: the ground colour runs from brown through pink to yellow, and the shell may carry up to five dark bands. The lip of the opening is usually dark brown, which separates it from the closely related white-lipped Cepaea hortensis. Because of this variation the snail has become a model organism in ecological genetics and citizen science. It lives in woodland, dunes, gardens and disturbed ground, eats mostly dead or senescent plants, is a hermaphrodite that must mate to lay fertile eggs, and can live seven or eight years. It has been introduced to North America, where it can be a pest of vineyards.