Nature is Metal

#strangestanimal #earthworm #funfact Caecilians are amphibians like salamanders and frogs, but they are often mistaken for earthworms or snakes. They don’t have any limbs and their tails are short. Their skin is smooth and usually dark, but some species have colorful skins. Inside the skin are calcite scales. There are nearly 200 species of caecilians known to science, ranging from the 4 inches to 5 feet long.