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- Robert Haskell.
Robert Haskell.
Robert Haskell is a contributing author and manager of consumer affairs for <a href="http://www.officesalesusa.com/">Discount Office Supplies</a> and <a href="http://www.worldatfocus.com/">www.worldatfocus.com</a>.
Articles by this Author
Strange Twists of Evolution
- By Robert Haskell.
- Published 12/8/2011
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Capable of swimming its entire life non-stop, one might wonder, how can a shark do this without rest? Sharks require water movement through their gills in order to breathe. This puts the animal in a precarious position because even if it could swim unconsciously, how could it know if it was heading towards danger? Sharks have the ability to rest half their brains while the other side remains active. Likewise, other marine animals such as whales, dolphins and porpoises have this same exact ability.
