Lesser Whilrpool Ramshorn Snail Anisus vorticulus

The lesser whirlpool ram’s-horn snail Anisus vorticulus is a small aquatic snail with a flattened spiral shell rarely more than 5 mm in diameter. It occurs in unpolluted, calcareous waters in marsh drains with a dense aquatic flora, and favours ditches with a diverse flora but little emergent vegetation. Image: Alex Hyde / Back from the Brink (Flickr).

Find out more: iNaturalist, JNCC – Species description