U.S. and Canadian researchers have discovered a grapefruit-sized organ in the chin of rorqual (baleen) whales that controls the expansion of their massive jaws during feeding and that has allowed them to become the largest animals on Earth.
Rorqual whales include blue, humpback and fin whales, and the largest of them, blue whales, can grow to more than 100 feet in length and a weight of more than 150 tons. http://www.latimes.com/news/science/
Rorqual whales include blue, humpback and fin whales, and the largest of them, blue whales, can grow to more than 100 feet in length and a weight of more than 150 tons. http://www.latimes.com/news/science/
Article courtesy of The Los Angeles Times -Science Now by Thomas H. Maugh II
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