Snails have a single spiral shell. The shell usually sits high on the snail’s back and inside the shell cavity; it spirals inwards into a smaller and smaller tube. They use their large muscular foot for moving slowly across surfaces. The foot can be pulled into the shell when they are threatened. Snails belong to a very large group of molluscs called gastropods.
Browsing snails eat seaweed. They have teeth that look like a wood rasp used to scrape the surface of seaweed.
It is called a radula. The mouth is below the front of the head. The anus is near the edge of the shell at the top front of the body. The digestive organs need to be organised into the shape of the figure 8 so it can fit into the spiral shell. Browsing snails have a smooth round opening to their shells.
Snails can be seen in their thousands in rockpools, on rock platforms and under loose rocks.