What external features that are different in the snake and the shark?

What are predators of dragon fly? What is a hand reared lamb called? What is the lowest bearded dragon can get? Do spiders eat lizards? How bad are snakes in Alabama? Do bearded dragons eat maggots? What biome is primarily found around the equator? What size is the serval? Can you feed your leopard gecko waxworms if hes getting to skinny? What five states is the Reelfoot Rift in? What do Pygmies houses look like? Are tortoise warm or cold blooded? What is the gestation period of peninsula cooter turtles? How far do ocelots travel in the rainforest? What does it mean if someone calls you a snake? Which sea turtle is on the endangered list? How does a flying snake glide? How do you tell a land turtle if it is a boy or girl? In the fable of the tortoise how does the tortoise get a broken shell? What does it mean when flem is coming out of a snakes mouth and nose?

What external features that are different in the snake and the shark?