vertebrates

There are different kinds of vertebrates there are fish,amphibians and a lot more like humans but I'm pretty much just going to talk about fish. Now I know about cartilage if not I'm going to talk about it. Your body has some  cartilage okay if you want to know what cartilage feels like than feel your ear it is flexible that is because it is made out of cartilage. And I think every body has heard about this cartilage animal it is the SHARK! And a shark is almost all cartilage.bye