Turtles lose their shells

How to tell a turtle without a shell [closed]

Most turtles in nature's best bet is their defensive shell, and it's hard to imagine the circumstances under which it might be beneficial to get rid of them.

Snapping turtles only elongated their necks and developed false mouth baits and heavy parts. Certain turtles have softer or smaller shells to aid mobility, but the shell is still very useful (for example, green sea turtles cannot retreat into the shell, but can use it as protection against shark bites when angled to the right) . The turtle shell is not just bones, it houses blood vessels, nerves and important organs. As you said, it's like an extension of your chest. It is impossible to remove a turtle from its shell, and it is just as unlikely that they would care so much about tracking that they become shellless again.

However, if a mutation occurs and is beneficial to it, it can still be identified by the basic skeletal structure (jaws, legs, etc.), organs, and DNA controls.

Reasons they might lose their shells might even be why they evolved to have them - to dig. For example, if an apocalypse happened that wiped out most of the turtle dwellings, they could choose to dig underground and live most of their lives there to find more food and escape droughts, eliminating the need for one such protection is eliminated and the return becomes more beneficial half-shells. https://www.theatlantic.com/science/archive/2016/07/the-turtle-shell-first-evolved-for-digging-not-defence/491087/


It is possible that the shell part will be lost. Modern softshell turtles are mostly on their way there. But the rib structure it supports is needed for the turtles' breath.