A tasseled wobbegong shark (top) lies on the seafloor with the head of a brown-banded bamboo shark in its mouth on the fringing reef of Great Keppel Island on Australia's Great Barrier Reef in August 2011.
Troops from the EU Naval Force warship FS Aconit intercepting a group of suspected pirates off Somalia in March 2012. Multinational naval patrols in the area have been partly credited with reducing incidents of piracy.
Men sit by the side of the Panama Canal as a ship sails past in Gamboa near Panama City, last month. The expansion project is aimed at accommodating the world's largest container ships.
Laborers stand on a new ship at a Rongsheng Heavy Industries shipyard in Nantong, China, in 2012. The troubles at Rongsheng, China's largest private shipbuilder, mirror what's happening in the global industry.