| Carapace: |
The top shell, an outgrowth of bone. |
| Flippers: |
Pond turtles have flat feet, webbed toes for digging in the mud, tearing
food and courtship.
Sea turtles have broad flippers for swimming. |
| Plastron: |
The bottom shell. |
| Scutes: |
Scales over both shells, made of keratin like fingernails. |
| Neck: |
A pond turtle can fold its neck into its shell in an S shape, sea turtles
can't do that. |
| Nostrals: |
They are near the top of the head so the turtle won't have to stick
its head far out of the water to breath. |
| Beak: |
They have no teeth, but the jagged beak catches, holds and slices food. |
| Ears: |
No outside parts to slow it down underwater. |
