This is what's inside a turtle shell. | Insider Science

Turtles exhibit diverse abilities and behaviors, including retracting their heads and limbs into their shells for protection. Many are excellent swimmers, and some can even remain submerged for extended periods. Sea turtles are particularly known for their remarkable migratory abilities, traveling vast distances between feeding grounds and nesting beaches. | Fishing World Tv

This sea turtle freed itself from the jaws of a tiger shark by flipping over several times and using its shell to escape the attack. | CBS News