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Delfini

Delfini. Delfini imajo tudi drugo ime, ki je Delphinidae . Poznamo 34 vrst delfinov. Spadajo v podred zobatih kitov. Orientirajo in sporazumevajo se z zvočnimi signali.

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Delfini

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  1. Delfini

  2. Delfini imajo tudi drugo ime, ki je Delphinidae. Poznamo 34 vrstdelfinov

  3. Spadajo v podred zobatih kitov. Orientirajo in sporazumevajo se z zvočnimi signali.

  4. V ustih imajo od 50 do 120 zob, s katerimi zgrabijo spolzek plen, kot so ribe in mehkužci. Delfini hrane ne žvečijo, temveč jo pogoltnejo. Pri delfinih dihanje ni avtomatično kot pri nas.

  5. Žival mora načrtovati vsak dih. Zato delfini nikoli ne spijo. Vsaj ne tako kot mi. Spijo samo s polovico možganov. Ko delfin spi , počiva samo polovica možganov, druga pa nadzoruje okolico, in skrbi, da žival plava in pazi na morebitne nevarnosti.

  6. Vsake 4 ure se polovici zamenjata. Ena hemisfera – polovica možganov je Vedno budna. Tako delfin dejansko celo življenje plava.

  7. Delfinovo okostje

  8. Oglejte si prikupen filmček z delfinom in muco http://www.youtube.com/watch?v=fPPlaNPH8Wg Izdelala Neja Lenart

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