Sharks Sharks Elina Y5C Elina Lee Y5C

Contents Introduction……………………………………..Page 3 Physical Description…………………………Page 4 Parts of a Shark…………………………………Page 5 Camouflage………………………………………Page 6 Types of Sharks…………………………………Page 7 The eight classifications of sharks……Page 8 Strange Sharks………………………………….Page 9 Shark teeth……………………………………….Page 10 What do sharks eat?.............................Page 11 Bibliography……………………………………...Page 12

Introduction Sharks were living even before dinosaurs walked on Earth. There are over 350 types of shark. They can be found in warm and cold seas. They are a type of fish, but they have no bones, just cartilage. They have rough skin instead of scales.

Physical Description Sharks come in different sizes, for example, the dogfish shark is only a few centimetres long, while the whale shark is the largest fish in the world.

Parts of a Shark Sharks are fish, however they do not have bones-their skeletons are made out of cartilage. They swim by swinging their tails from side to side. Sharks use their fins to steer and keep their balance.

Camouflage Many sharks are protected by camouflage patterns that help them to blend in with their habitat. They are dark on top and pale on the bottom.

Types of Sharks There are many types of sharks. A few types of sharks are very dangerous and are to be feared, however the others are completely harmless. There are 360 different species of sharks which can be classified into eight different groups.

The eight classifications of sharks Group Shark Species Hexanchiformes Cow shark, Frilled shark Squaliformes Bramble shark, Dogfish and Roughshark, Prickly shark Pristiophoriformes Sawshark Squatiniformes Angel Shark Heterodontiformes Bullhead Shark or Horn Shark Orectolobiformes Carpet shark, Zebra shark, Nurse shark, Wobbegong, Whale shark Carcharhiniformes Blue Shark, Tiger Shark, Bull Shark, Grey Reef Shark, Blacktip Reef Shark, Caribbean Reef Shark, Blacktail Reef Shark, Whitetip Reef Shark, Oceanic Whitetip Shark, Hound Shark, Catshark, Hammerhead Shark Lamniformes Mackerel shark, Goblin shark, Basking shark, Megamouth shark, Thresher sharks, Shortfin and Longfin Mako sharks, Great White shark

Strange Sharks 1) Hammerhead Shark Frilled Shark Goblin Shark 2) 3)

Shark teeth The shape of the teeth depends on the food that it eats. They have many rows of teeth. Shark teeth break very easily. When one tooth breaks, a new one grows. Sharks teeth normally re-grow. In fact it can grow a thousand teeth during it’s lifetime.

What do sharks eat? Most sharks are fish eaters. Many of the largest sharks eat sea lions, dolphins and even other sharks! The shark uses its teeth to break up the prey before swallowing it. Some shark eat clams, crabs and lobsters. So they have flat teeth for crushing shells. The whale shark eats plankton. It swims with its mouth wide open. Special filters in its gills catch the plankton, and lets the water flow though.

Bibliography http://www.sharks-world.com/types_of_sharks.html Sharks by Kira Freed http://www.google.co.uk/imgres?imgurl=http://img.dailymail.co.uk/i/pix/2007/01_wk4/FrilledSharkG http://www.google.co.uk/imgres?imgurl=http://www.aboututila.com/ScubaInfo/Whale-Sharks http://www.google.co.uk/imgres?imgurl=http://img.ezinemark.com/imagemanager2/files/30003693/2011/02/2011-02-21-11-15-30-2-smaller-fishes http://www.google.co.uk/imgres?imgurl=http://echeng.com/journal/images/misc/061006_113519_echeng6553.jpg&imgrefurl=http://echeng.com/journal/2006/10/09/hammerhead-sharks