GREAT BARRIER REEF, AUSTRALIA - OCT 28:  Scuba diving tourist feeds a giant potato cod (Epinephelus tukula) October 28, 2009 in Great Barrier Reef, Australia.
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GREAT BARRIER REEF, AUSTRALIA - OCT 28: Scuba diving tourist feeds a giant potato cod (Epinephelus tukula) October 28, 2009 in Great Barrier Reef, Australia.