Symmetry is a feature of many plants, animals and even some molecules — like water. But that’s not the case with snails and their coiled shells. They are chiral — asymmetrical in such a way that they ...

A snail from the Canary island of La Gomera produces its impressive camouflage layer by itself in the process of an unexpectedly complex behavioural pattern. The snail grazes lichen material from the ...