>Reply:
Dear Joey and Joe,
By keeping half their brain alert they can detect danger. Toothed
whales usually live in family groups so they also protect each other.
>Question:
>Dear Ms. Marshall,
>
>If whales rest by sleeping 1/2 their brain at a time, how do they defend
>themselves at night?
>
>Thanks,
>
>Joe & Joey Dille
>Telford PA
-- Kim Marshall-Tilas Senior Director Ocean Alliance/Whale Conservation Institute 191 Weston Road, Lincoln, MA 01773 781.259.0423 or fax 259.0288 www.oceanalliance.org
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