Snails have shells the moment they're born, but it's kind of hard to tell. In fact, it's hard to even see a baby snail. Some are nearly microscopic, such as Angustopila psammion, whose adult-sized ...

It would seem a bit foolish to put a big cap on the end of a torch, right in the path of the beam of light. But that’s exactly what one type of sea snail does. Hinea brasiliana has a pair of organs ...