Georgia Sea Turtle Center - What makes up a turtle's shell? 🐢 The top layer is Keratin, the same material as our hair and nails. Underneath are the spine (in blue) and

The turtle carapace as an optimized multi-scale biological

Sea Turtles Smithsonian Ocean

The Reptiles and Amphibians of Arizona

Reptiles Keratin SKIN and HOW Turtles' or Tortoises' HEAL – Crazy Plants Crazy Critters

Kansas Herpetofaunal Atlas

Apalone spinifera

Voyage of the Lonely Turtle, Photo Essay: Turtle Anatomy, Nature

Sea Turtles Of The World

Vertebral Column and Turtle Shells – Morphology of the Vertebrate

Reptiles Keratin SKIN and HOW Turtles' or Tortoises' HEAL – Crazy Plants Crazy Critters

Sea Turtles Smithsonian Ocean

Kansas Herpetofaunal Atlas

Biol. 453 - Comparative Vert. Anatomy, Amniote Skin Photos

3 Reasons For White Spots on a Turtle's Shell - All Turtles

The secret of the turtle shell