Researchers find clue to explain how penguins know when to surface
Friday, December 9, 2011 - 10:00
in Earth & Climate
(PhysOrg.com) -- Anyone who has ever swum around near the bottom of a swimming pool, or flippered along an ocean floor for any length of time without benefit of an air supply knows that there is a decision making process going on from the moment the dive begins: when to surface?