MadSci Network: Zoology

Re: Sharks

Area: Zoology
Posted By: Roger Raimist, Prof. Biological Sciences
Date: Thu May 8 15:01:05 1997
Area of science: Zoology
ID: 862926568.Zo
Sharks don't sleep as we know it but they do rest. Often they will come to a 
quiet bottom area and stay there motionless. Their gills keep moving water and 
oxygen but they are "sleeping" motionless on the bottom. If you splash the 
water or create a concussion wave near them by moving rapidly, they seem to 
"awaken" rapidly and move off. 
Hope that helps. 

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