Note: These Challenge Questions coincide with the Spring 2003 Reports Date: Tue May 06 2003 - 08:42:07 EDT
A gray whales pectoral fin is different from a humans hand and arm because their wrists and elbow are unable to move. They are similar because a gray whales flipper skeleton has four finger like structures, just like us humans do!
Thanks, Samantha Smith, Challenger Middle School
Challenger Middle School
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