Mysterious so-called 'underwater crop circles' that have mystified scientists for years, are finally explained by researchers who discover they're made by love-seeking male pufferfish. Jen Markham has... more 
Mysterious so-called 'underwater crop circles' that have mystified scientists for years, are finally explained by researchers who discover they're made by love-seeking male pufferfish. Jen Markham has the story. less 
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Thu, Oct 3, 2013 1:16 PM EDT