Which are the top animals that have shells? We scoured the land and sea to find the most intriguing critters who rely on their shells to survive. Here are the top 10. Sea urchins (Echonoidea ...

Whether you’re a lover of all sea animals or prefer them as weapon-wielding ... 2 A tortoise by any other name A turtle refers to any reptile with a shell, so all tortoises are technically ...

They're also some of the only animals that can breathe with their butts. You see, inside a turtle shell is a very particular respiratory system. Wojakowski: You will see the lungs towards the top ...