Mexican naval officers stand guard after cutting open more than 20 shark carcasses filled with slabs of cocaine after checking a container ship in a container port in the southern Mexico state of Yucatan June 16, 2009. Mexico's navy seized more than a tonne of cocaine stuffed inside frozen sharks, as drug gangs under military pressure go to greater lengths to conceal narcotics bound for the United States.
REUTERS/Argely Salaza
