turtle carapace
Carapace
top shell, an outgrowth of bone.
turtle scute
Flippers
pond turtle has flat feet, webbed toes for digging in mud, tearing food, courtship, sea turtle has broad flippers for swimming.
Plastron
bottom shell
Scutes
scales over both shells, made of keratin like your fingernails
turtle neck
Neck
pond turtle can fold neck into its shell in S-shape, sea turtle can't
Nostrils
near the top of head so turtle won't have to stick head far out of water to breathe
turtle beak
Beak
no teeth, but jagged beak catches, holds, and slices food
Ears
no outside parts to slow it down underwater