Re: extinction

From: Dara KOPER (dara.koper@EUnet.at)
Date: Wed Nov 13 2002 - 14:47:01 EST

  • Next message: Pieter Arend Folkens: "General whale biology"

    extinctionOne type of dolphin
    namely the Baiji or Pei Chi
    a freshwater dolphin
    which lives in the Jangtze river in China
    is the world's most endagered cetacean species

    The Chinese government estimates
    that only 100 or maybe even only 50 Baijis
    are left alive today

    Bye
    Dara
      ----- Original Message -----
      From: Pieter Arend Folkens
      To: patti burton
      Cc: ask@whale.wheelock.edu ; pita@whale.wheelock.edu
      Sent: Wednesday, November 13, 2002 8:50 AM
      Subject: extinction

        i was wondering if you know any extinked whales becouse i have to do a speech on whales on nov,30,2002 and i just was wondering if you could help my on me speech

      No modern species of whales are extinct. Some populations of whales are no longer in particular areas (gray whales in the North Atlantic for example). There are numerous prehistoric whales that are extinct. An entire group of ancient whales called 'Archaeocetes' went extinct by around 36 million years ago due to the development of the Antarctic Convergence when the continent of Antarctica became completely separated from South America and Africa. Archaeocetes were the transition whales from terrestrial animals to the extant (present in modern times) suborders of whales.

      There are several species of whales which are endangered, for example: blue whales, humpback whales, right whales, and others. The northern right whale in particular is very endangered and nearing extinction.

      Cheers,

      Pieter Folkens

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