Introduction

Sharks are amazing fish that have been around since long before the dinosaurs existed. They live in waters all over the world, in every ocean, and even in some rivers and lakes. Sharks are a type of a fish. Sharks do not have any bones, their skeleton is made of cartilage, which is a tough substance not nearly as hard as bone. cartilage is what you have in your Nose and ear, that is why your nose and ear can bend easily.   

This is a table comparing the bony fish and sharks.