The moment I started looking fo a topic on Marine Science, I knew what I wanted to write my paper about. Sharks was what called my attention the most from the other animals that live in the sea. Sharks are really interesting when you get to know more about their life, what they do, eat and how they are. Even though there are many different kinds of sharks, I would likt to mention how they are in general and then describe a specific kind which interest me the most, that is the Great White Shark.
Sharks are fish that live in the water and are cold-blooded animals.
Unlike humans, they have no bones since their skeleton is made up of cartilage. In addition, according to the information by the Internet, they renew their teeth whenever they lose one. Sharks have a special valve inside their intestine that looks like a spiral staircase on its side, these valves help sharks digest food. Shark's skin looks and feels like tiny teeth called denticles. Their skin is sometimes used as sandpaper.