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The Big Blue Whale An Endangered Species (Balaenoptera Musculus)

The Big Blue Whale An Endangered Species (Balaenoptera Musculus). By Nadia Berardelli. Table of Content. Descritption. Habitat. Cause of Decline. The Body. Having Babies. Research and Recovery. How Whales Live. Noises. Description.

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The Big Blue Whale An Endangered Species (Balaenoptera Musculus)

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  1. The Big Blue WhaleAn Endangered Species(Balaenoptera Musculus) By Nadia Berardelli

  2. Table of Content Descritption Habitat Cause of Decline The Body Having Babies Research and Recovery How Whales Live Noises

  3. Description • The blue whale is the biggest creature that has ever lived on earth. • They can grow to 100 feet long and weigh 150 tons. • The whales are mottled bluish-gray on their backs and sides. • Female blue whales are a little bigger than the males.

  4. The Body • They have hundreds of baleen plates, instead of teeth in their mouth. • It has as many as 88 folds of skin in its throat. • The skin is springy and smooth.

  5. How The Whale Lives • Feed on krill and may consume several tons each day • Use their sense of hearing and their sense of touch to find their way around. • It is a mammal and breathes air, not water. • They can live for about 70 to 80 years

  6. Habitat • Whales migrate long distances between equatorial wintering grounds and high latitude feeding areas. • In summer they may be found across the Gulf of Alaska and in winter, off southern California • Spend most their time along the edges of continental shelves.

  7. Having Babies • Male and female whales mate in winter and then part. • Babies are born about a year later. • A baby whale is 23 feet long at birth. • They drink more than 150 gallons of milk a day.

  8. Noises • You can hear a whale’s blow, when it comes to the water surface for air. • They communicate through a very low hum which can travel for thousands of miles through the seas.

  9. Causes Of Decline • Estimated 4,900 to 6,000 blue whales inhabited the northern Pacific Ocean prior to whaling. • Between 1910 and 1966 ~ 8,200 were killed in the North Pacific, severely reducing the population. • The world population is estimated at 8,000 to 12,000.

  10. Research and Recovery • Blue whales are protected by several U.S. and international treaties and agencies. • Whale sightings have increased since the end of whaling. • Despite 50 years of protection, the population has not recovered.

  11. The End click here

  12. CreditsInformation and Pictures • http://mbgnet.mobot.org/salt/whale/blue.htm • http://www.zoomwhales.com/subjects/whales/species/bluewhale/Loudest.shtml • http://www.rorqual.com/blue.htm • http://www.acsonline.org/factpack/bluewhl.htm • http://www.earthwindow.com/blue.html

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