about shark

7/29/2019 About Shark

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The White

GreatShark


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Created By :

Fery Fachria

nsyah

XI.IA 2SMAN 4 Kendari

The WhiteGat Shark

The WhiteGreatShark


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MAIN MENUThe WhiteGreatShark


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The great white shark,(Carcharodoncarcharias), also knownas great white, whitepointer, white shark,or white death, is a

large lamniform sharkfound in coastalsurface waters in allmajor oceans. Thegreat white shark isvery well known for itssize, with the largestindividuals known tohave approached orexceeded 6 metres(20 ft) in length and

2,268 kilograms(5,000 lb) in wei ht. It

The WhiteGreatShark

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The WhiteGreatShark

The great whiteshark is arguablythe world's largestknown extantmacropredatory

fish and is one ofthe primarypredators of marinemammals. It is alsoknown to prey upona variety of other

marine animalsincluding fish,pinnipeds, andseabirds. It is theonly known

surviving species ofits genus,

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The WhiteGreatShark

Carolus Linnaeusgave the great whiteshark its firstscientific name,Squalus carcharias in

1758. Sir AndrewSmith gave it thegeneric nameCarcharodon in 1833,and in 1873 thegeneric name was

identified withLinnaeus' specificname and the currentscientific nameCarcharodon

carcharias wasfinalised. Carcharodon

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The WhiteGreatShark

Great white sharks livein almost all coastaland offshore waterswhich have watertemperature between

12 and 24 C (54 and75 F), with greaterconcentrations off thecoasts of Australia,South Africa, California,the northeastern US,

Japan, and NewZealand and thewaters of theMediterranean. One ofthe densest known

populations is foundaround Dyer Island,

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The WhiteGreatShark

DESCRIPTION

Great whites displaycountershading,having a whiteunderside and a greydorsal area

(sometimes in abrown or blue shade)that gives an overall"mottled"appearance. Thecoloration makes it

difficult for prey tospot the sharkbecause it breaks upthe shark's outlinewhen seen from the

side. From above, thedarker shade blends


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The WhiteGreatShark

It is unclear howmuch a concurrentincrease in fishing forgreat white sharkshas caused the

decline of great whiteshark populationsfrom the 1970s to thepresent. No accuratepopulation numbersare available, but the

great white shark isnow consideredendangered. Sharkstaken during the longinterval between birth

and sexual maturitynever reproduce,

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The WhiteGreatShark

CLASSIFICATION

Great white sharkFossil range: 160

Conservation status

Vulnerable (IUCN 3.1)

Scientific classification

Kingdom: Animalia

Phylum: Chordata

Class: Chondrichthyes

Subclass: Elasmobranchii

Order: Lamniformes

Family: Lamnidae

Genus:Carcharodon

Smith, 1838

Species: C. Carcharias

Binomial name

Carcharodon carcharias(Linnaeus, 1758)


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ANATOMYThe WhiteGreatShark


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ANATOMY

TeethShark teeth are embedded in the gums rather than directlyaffixed to the jaw, and are constantly replaced throughout life.Multiple rows of replacement teeth grow in a groove on theinside of the jaw and steadily move forward as in a "conveyorbelt"; some sharks lose 30,000 or more teeth in their lifetime.SkeletonShark skeletons are very different from those of bony fish and terrestrialvertebrates. Sharks and other cartilaginous fish (skates and rays) haveskeletons made of cartilage and connective tissue.

JawLike its relatives, rays and skates, the shark's jaw is not attached to thecranium. The jaw's surface, like the shark's vertebrae and gill arches,needs extra support due to its heavy exposure to physical stress and itsneed for strength. It has a layer of tiny hexagonal plates called "tesserae",which are crystal blocks of calcium salts arranged as a mosaic.FinFin skeletons are elongated and supported with soft and unsegmentedrays named ceratotrichia, filaments of elastic protein resembling thehorny keratin in hair and feathers.


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