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5th. A - David & Pablo
 

5th. A - David & Pablo

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    5th. A - David & Pablo 5th. A - David & Pablo Presentation Transcript

    • David Àvalos,Pablo Esteban5th A
    • 1.-Scientific name2.-Rating3.-Biology4.-Physical characteristics5.-Reproduction6.-Risk level of the specie7.-Questions
    • •Sharks scientific name is selachimorpha(selachos=shark morphe=form)
    • Fish Birds Vertebrates MammalsAnimals Reptiles Invertebrates Amphibians
    • •The sharks live in the sea, they live in groups,they are carnivorous and oviparous.
    • •The sharks can measure 17 cm up to 18meters,•They weight about a ton.
    • •Most sharks are oviparous, meaning that the eggs hatch in theoviduct within the mothers body and that the eggs yolk andfluids secreted by glands in the walls of the oviduct nourishesthe embryos. The gestation period is of 18 months to 24 months.
    • •They are in risk beacause:The fins, used in Asian cuisine for the famoussoup, usually have a much higher value thanthe rest of the body and can exceed 100 € forkilo. Therefore, fishermen usually practice"finning", which annually kills about a hundredmillion sharks. Involves cutting the fins andthrow the bodies dead or dying back into thewater, using only between 2% and 5% of theanimal, and including young sharks.
    • Why the sharks is a riskspecie? Because the sharks are used in Asia to meke his suop, and they kill a lot of sharks.The sharks kill a lot ofpeopple? No, they only kill 30 persons in a year.
    • •Only four species of •One of the ancestors ofTiburon, of more today was the Megalodonthan 300, has attack shark, between 12 and 15the man m, the largest carnivore that has sailed the seas