Ask a Question
or
Create a Poll
  1. Home /
  2. Questions /
  3. Science
  4. / Geography
  5. / General Geography

by Anonymous on February 14th, 2007

Anonymous

Question

Help answer this question below.

What cetacean that can live in fresh water

  • Like
  • Report
Share:
Other

Answers. Showing one answer.

  • by canadianhelper on February 14th, 2007

    canadianhelper

    There are seven freshwater cetacean
    species:
    1. Also known as the pink river dolphin or boto, the Amazon
    river dolphin can only live in freshwater. It is found throughout
    much of the Amazon and Orinoco River Basins in Bolivia, Brazil,
    Colombia, Ecuador, Guyana, Peru, and Venezuela. It is the most
    abundant freshwater cetacean and probably numbers in the
    tens of thousands. However, it is classified as Vulnerable, with
    several dams having already fragmented the Amazonian
    population, and many more proposed.

    2. The tucuxi lives in both salt- and freshwater and is found on
    the east coast of Central and South America. A riverine
    sub-species, S. f. fluviatilis, is found in the Amazon River and its
    main tributaries in northern Brazil, Peru, Colombia, and
    Ecuador, as well as in the lower Orinoco River in Venezuela.
    Classified as Data Deficient, its population is not known but it is
    not thought to be immediately threatened.
    3. The Critically Endangered Yangtze river dolphin, or baiji,
    can only live in freshwater and has very poor eyesight. It once
    lived in the lower and middle reaches of the Yangtze River,
    Fuchun River, and in Dongting and Poyang Lakes, China. Today
    it is the world's most endangered cetacean, with fewer than
    100 surviving in the middle reaches of the Yangtze.
    4. The Endangered Ganges river dolphin, or susu, can only live
    in freshwater and is essentially blind. It once ranged throughout
    the Ganges-Brahmaputra-Meghna and Karnaphuli-Sangu river
    systems of Nepal, India, and Bangladesh, from the Himalayan
    foothills to the Bay of Bengal. Today its population is divided by
    dams into isolated groups and has a much reduced range. The
    lowest estimate for the total population is 1,200–1,800
    individuals

    5. Closely related to the Ganges river dolphin, the
    Endangered Indus river dolphin, or bhulan, is found in
    Pakistan’s Indus River. One hundred years ago, the
    sub-species lived throughout the 3,500km-long river and
    its tributaries. Today around 1,100 individuals survive in a
    1,375km-stretch of the Indus, divided into isolated
    populations by six barrages (a type of dam).
    6. The Irrawaddy dolphin lives in both salt- and
    freshwater, and is found in a few locations in South and
    Southeast Asia. There are three exclusively freshwater
    populations: about 70–100 individuals live in a
    190km-stretch of the Mekong River (Lao PDR, Cambodia);
    33–50 live in a 420km-stretch of the Mahakam River
    (Indonesia); and about 59 live in a 370km-stretch of the
    Ayeyarwady River (Myanmar). In addition, very small
    numbers survive in the partially freshwater Songkhla Lake
    (Thailand) and the brackish Chilka Lake (India). The
    freshwater populations are all classified as Critically
    Endangered, as is the Songkhla Lake population.
    7. The finless porpoise is the only porpoise species that
    can live in freshwater. It is found in coastal waters
    Southeast and East Asia, with a sub-species, N. p.
    asiaeorientalis, found in the Yangtze River and its adjacent
    lake systems. Classified as Endangered, there could be
    fewer than 2,000 individuals of this freshwater
    sub-species.

    http://72.14.205.104/search?q=cache:v4ZjnioE_lMJ:www.wwf.de/fileadmin/fm-wwf/pdf-alt/arten/bedrohtearten2/artena-z/17.pdf+freshwater+cetacean&hl=en&ct=clnk&cd=1&client=firefox-a

    Comments
    • Like
    • Report

    No comments. Post one | Permalink

Want to attach an image to your answer? Click here.

Did this answer your question? If not, then ask a new question or create a poll.

More Questions. Additional questions in this category.

You're reading What cetacean that can live in fresh water

Follow us on Facebook!

Related Ads

Related Questions

Professionally Researched

Answerbag

a Demand Media company