A humpback whale jumps at a whale watching point, off Okinawa, southwestern Japan, Tuesday, March 25, 2008. Males produce a complex whale song, which lasts for 10 to 20 minutes and is repeated for hours at a time. The purpose of the song is not yet clear, although it appears to have a role in mating.
(Photo: AP Photo/Itsuo Inouye)
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