1-1/2-inch skin covers elephants. Their wrinkly skin maintains their bulk. Crevices trap 10 times more dirt and moisture than flat skin. Cooling shade.


Rhinos' collagen skin is 2 inches thick. Thicker skin protects them. Their skin sunburns easily. Rhinos roll in mud for sun and insect protection.


Hippos have a thin layer of fat, but their hairless, thick skin protects them. Small-caliber gunfire can't penetrate their thick skin. After being shot, they resume attacking.


Camels live in scorching deserts and have thick skin to shield them from the sun. Their knees and chests have thick skin that protects them from hot sand.


Crocodile skin is thick and resilient, making it a top fashion leather. As strong predators with "armoured skin," crocodiles' touch receptors are startling.


The sperm whale has the world's largest teeth. 14-inch-thick skin covers their head and back. Their thick, rough skin is insulated by fat.

Sperm whale

Their 4 inch thick skin is rubbery. It protects them from sharks, killer whales, and tiger sharks. Individual sharks can be identified by the unique pattern of dots on their skin.

Whale Shark

Manatees are 9-10 feet long. These animals' backs and tails are covered in algae. Thicker skin protects slow-moving manatees.


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