Rectangular whorls game the scientists the impression of "a Cubist interpretation of other snails with ‘normal’ shell shapes.

Among the most successful of these are predatory green crabs—small ... nearby—signaled to the snails through "risk cues" like ...

like blue crabs, in that they don’t have a uniformly hard exoskeleton and can’t grow their own shells. Instead, hermit crabs have a hard exoskeleton on the front part of their bodies but a ...

A tiny new species of snail with an unusual shell has been named after the painter Pablo Picasso. Researchers who discovered ...