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Tuesday, June 21, 2011

Blue Whales

Think of the largest thing you've ever seen in your life. It might have been a sky scraper, maybe a big tree. But that’s almost nothing compared to the ocean and the the ocean is the care taker of the largest mammal on earth, the Blue Whale. It could possibly be the largest animal ever!
Blue whales got there name because of their color, a blue-gray.
On average they are 70-90 ft. long.
The largest known Blue whale was 108 ft. long!
They can weigh more than 100 tons.
Blue whales can be found migrating all over the world.
Mother whales hold their calves for around 12 months before giving birth.
Calves are  23-27 ft. long after birth.
They eat 4 tons of shrimp and krill every day.
Calves gain around 200 pounds a day or 8 pounds an hour.
Sadly in the 1900's they were hunted for their oil. they would be shot with a harpoon and filled with air so they wouldn't sink.
They held about 120 barrels of oil.
Finally in 1996 hunting Blue whales was illegalized all over the world, but by that time 99% of them were gone.
Now there is 5,000-10,000 Blue Whales  in the southern hemisphere and only 3,000-4,000 in the northern hemisphere.

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