Elina Lee Y5C

Sharks

Sharks

Elina Y5C

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

IntroductionSharks 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 DescriptionSharks 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 SharkSharks 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 SharksThere 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 sharksGroup Shark Species

Hexanchiformes Cow shark, Frilled sharkSqualiformes Bramble shark, Dogfish and Roughshark, Prickly

sharkPristiophoriformes SawsharkSquatiniformes Angel SharkHeterodontiformes Bullhead Shark or Horn SharkOrectolobiformes Carpet shark, Zebra shark, Nurse shark, Wobbegong,

Whale sharkCarcharhiniformes 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 Sharks1) Hammerhead Shark2) Frilled Shark3) Goblin Shark

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Shark teethThe 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.

Bibliographyhttp://www.sharks-world.com/types_of_sharks.htmlSharks 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