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 ...

Beneath the clear tropical waters lurks one of the ocean’s most dangerous creatures — the Geographer Cone Snail (Conus geographus). Its beautifully patterned, intricately marbled shell conceals a ...