Thursday, April 26, 2012
Whale Regression: and Evolutionary backtrack
The whale is a very interesting example of evolution because it is the largest animal on earth and is a fully aquatic mammal. This means that it gives birth to live young, warm-blooded, and breathes air. Like all the mammals, the whale's ancestors left the sea to develop land roaming tendencies and structures, only to have them go back to the see and lose all their limbs, and have thier vital systems completely reworked. This could be because of food needs or that they have always lived near the sea. As you can see in the article, the fossils of the whales ancestors shed a very interesting light upon how an animal can change overtime, and what it keeps to remind itself of its past.
Posted by Anonymous at 10:16 AM