Gray whales often show their flukes when they dive. Often they dive after taking 3 breaths at the surface. I'm not sure whether they lift the tail out of the water so that the extra weight drives them down faster (as I do with my legs when I freedive). Maybe they are positioning the tail for the underwater swim, or maybe their lower backs just don't bend very easily.
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wow, that is cool. very very cool!
Posted by: katrina Gwinn | March 10, 2007 at 03:24 PM