Gray Whale Gray Whale
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Note: These Challenge Questions coincide with the Spring 2003 Reports

From: Kathryn Frey (kathryn_frey@greenwich.k12.ct.us)
Date: Tue Mar 11 2003 - 13:45:50 EST

  • Next message: Kathryn Frey: "challenge question # 8"

    By: Hollie Kalinski Hamilton Avenue School Grade 5

            6. Do whales sleep?`
    Answer: Do whales sleep? No Scientists are sure just yet. Some say they
    don't stop swimming during migration, but many scientists now think they
    may sleep on "autopilot." They catch up to sleep in the lagoons where they
    are observed snoring! Others say whales take short naps of 10-20 minutes.
    Gray whales may sleep with their blowholes just exposed on the surface of
    the water. Two basic methods of sleeping are they either reat quietly in
    the water, verticly, or horizontally, or sleep while swimming slowly next
    to another animal. Companionable animals may pair for sleeping while
    swimming. Although still a matter of discussion. most reasearchers feel
    that in order to breathe, a dolphin or whale must be conscious and alert
    to recongize that its blowhole is at the surface. Whales must keep part of
    the brain alert to trigger each breath. Obviously sleeping safely at sea
    can pose problems, but the marine mamal system had addressed them.



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