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Note: These Challenge Questions coincide with the Spring 2003 Reports
Date: Thu May 08 2003 - 09:45:26 EDT
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"How a whale's flippers similar to and different from your hands?"
A whale flipper and human hand are similar in bone structure. The whales flipper has four long digits that resemble the human fingers. They can also use their flippers to hold things like how hummans can. They are different from each other because as the whale evolved to adapt to the water the elbow and wrists became rigid. Because of this they cannot move their "fingers" like humans can and can only move the entire flipper. Since their joints are rigid they can not twist or rotate their flippers like how humans can twist and rotate a hand.
Michael Rafanan
Challenger Middle School
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