(REUTERS/Carlos Barria) Sri Lankan fishermen wait to catch fish as they sit atop stilts in Ahangama, 180km (112 miles) south of Colombo, October 8, 2009. Stilt fishing is a traditional means of earning a livelihood in the area and each stilt is a prized possession handed down from generation to generation.

(REUTERS/Carlos Barria) Sri Lankan fishermen wait to catch fish as they sit atop stilts in Ahangama, 180km (112 miles) south of Colombo, October 8, 2009. Stilt fishing is a traditional means of earning a livelihood in the area and each stilt is a prized possession handed down from generation to generation.

(REUTERS/Dwi Oblo) Fisherman Siswanto rides on a self-built wooden cable car, created by himself, to cross the sea at Timang beach in Gunung Kidul, near the ancient city of Yogyakarta, Indonesia 19 April 2012. Siswanto crosses between rocks to catch lobsters.

(REUTERS/Dwi Oblo) A fisherman fixes nets on rocks to catch lobsters at Timang beach in Gunung Kidul, near the ancient city of Yogyakarta, Indonesia 19 April 2012.

(REUTERS/Ricardo Rojas) A man fishes in front of wind turbines in Juancho Pedernales, Dominican Republic April 20, 2012.

(REUTERS/Ilya Naymushin) A member of the "Rescuer", a state regional service, explains safety rules to a man fishing on ice of the Yenisei river, some 60 km (37 miles) south of Russia's Siberian city of Krasnoyarsk April 20, 2012.

(REUTERS/Finbarr O'Reilly) A fisherman hunts for shellfish along a reef off the southeast coast of Zanzibar island, Tanzania, December 1, 2007.

(REUTERS/Stringer) A Chinese Bai ethnic minority fisherman pulls two cormorants away from a fish during Erhai lake fishing opening festival in Dali, Yunnan province, China September 28, 2011. The cormorants are domesticated for fishing.

(REUTERS/Yves Herman) Shrimp fisherman Eddy D' Hulster, 68, who has been fishing for shrimp for 47 years, rides a carthorse to haul a net out of the sea after catching shrimp during low tide at the coastal town of Oostduinkerke, Belgium August 16, 2011. At the end of the fishing, the fishermen and their mounts leave the water to empty the net and to put the contents into two wicker baskets fixed on each side of the horse. This traditional method of catching shrimps along the North Sea coast, which dates back to some 500 years, attracts tourists every summer.

(REUTERS/Jason Lee) A resident fishes during an ice-fishing competition on a frozen lake in Beijing, China January 31, 2010.

(REUTERS/Vivek Prakash) A fisherman prepares his net for the night at Kandalama Lake, near Dambulla, Sri Lanka July 31, 2009.

(REUTERS/Ismael Abdi) A Somalia young man carries a fish on his head near the shores of Indian ocean in Mogadishu, November 3, 2007.

(REUTERS/David Gray) Fishermen walk through the muddy bottom of a polluted canal collecting fish in central Beijing, China October 21, 2010.

(REUTERS/China Daily) A fisherman carries the biggest fish caught during a winter fishing event as he poses for photographs on the frozen surface of Shitoukoumen Reservoir in Changchun, Jilin province, China December 25, 2011.

(REUTERS/Andy Clark)

(REUTERS/Feisal Omar) A Somali boy carries sword fish as he rides on a motorcycle taxi in southern Mogadishu, August 16, 2010.

(REUTERS/Yuri Maltsev) Fishermen drill ice-holes during a competition in Russia's far eastern city of Vladivostok February 19, 2012.

(REUTERS/Alexander Demianchuk) A man takes cover under a plastic foil to protect himself from severe frost while fishing in the Gulf of Finland at St. Petersburg's seaport January 21, 2006.

(REUTERS/Reinhard Krause) Palestinian fisherman paddle their boat as the sun sets in the Gaza Strip September 17, 2004.

(REUTERS/Petr Josek) Fishermen pull a net with fish from the lake of Svet at the south Bohemian town of Trebon, during the traditional Carp haul, November 4, 2008.

(REUTERS/Beawiharta) Villagers spear fish near Larantuka beach, on Indonesia's Flores island March 29, 2010.

(REUTERS/Jessica Rinaldi) Colby Deck, 18, hands a catfish that he caught by hand over to his friend Jesse Goates in Pauls Valley, Oklahoma June 30, 2007.

(REUTERS/Jessica Rinaldi) Colby Deck dives underwater to noodle for catfish in Pauls Valley, Oklahoma June 30, 2007. Noodling is the sport of fishing by hand instead of with a rod and reel.