A lifebelt lies on an ice floe at the Spree river in Berlin, Germany, January 8, 2016. REUTERS/Hannibal Hanschke

Lifevests and lifebuoys left by migrants float in the water near a beach during a rainstorm on the Greek island of Lesbos October 21, 2015. Over half a million refugees and migrants have arrived by sea in Greece this year and the rate of arrivals is rising with over 8,000 coming on Monday alone, in a rush to beat the onset of freezing winter, the United Nations said on Tuesday. REUTERS/Yannis Behrakis

A beach on the Greek island of Lesbos is covered with deflated dinghies, tubes and life vests left by refugees and migrants after crossing a part of the Aegean Sea from the Turkish coast, September 21, 2015. Fewer boats than normal carrying Syrian refugees and migrants from eleswhere landed on the Greek island of Lesbos on Monday morning as a storm threatened to hit, following a weekend of death at sea. Picture taken through a window. REUTERS/Yannis Behrakis

A sign and a safety buoy marks the boundary of a partially dried up pond at the Singapore Botanical Gardens February 26, 2014. Singapore and Malaysia are grappling with some of the driest weather they have ever seen, forcing the tiny city-state to ramp up supplies of recycled water while its neighbour rations reserves amid disruptions to farming and fisheries. REUTERS/Edgar Su (SINGAPORE - Tags: ENVIRONMENT)

Flood victims are pulled on inflatable tire tubes as they are evacuated from heavy flooding brought by tropical depression "Agaton", in Butuan, in the southern Philippine island of Mindanao January 20, 2014. Floods and landslides caused by tropical depression "Agaton" have killed 40 people and more than 500,000 people are displaced in Mindanao, the National Disaster Risk Reduction and Management Council reported on Sunday. REUTERS/Erik De Castro (PHILIPPINES - Tags: DISASTER ENVIRONMENT TPX IMAGES OF THE DAY)

Ecuadorian children jump into the Misahualli River in Tena, some 200 km (124 miles) southeast of capital Quito July 20, 2012. REUTERS/Guillermo Granja (ECUADOR - Tags: SOCIETY)

People enjoy a pool at the "Bobrovy Log" Fun Park in a suburb of Russia's Siberian city of Krasnoyarsk July 8, 2012.REUTERS/Ilya Naymushin (RUSSIA)

Vendors selling toy buoys wait for their customers at a consumer goods wholesale market in Yiwu, Zhejiang province July 5, 2012. Yiwu, located 300 kilometres south of Shanghai in eastern China's prosperous Zhejiang province, is considered a bellwether for China's low-cost exports, especially to emerging markets. China's leaders have said the country's export sector needs to move up the export value chain towards higher value-added products - including capital goods like telecom equipment and industrial machinery - and away from low-end exports like toys and apparel. But this transition will take time. To match story CHINA-ECONOMY/YIWU. Picture taken July 5, 2012. REUTERS/Gabriel Wildau (CHINA - Tags: BUSINESS)

Chris Mandel, 14, makes his way through a parking lot in the Warrington area of Pensacola Florida, June 9, 2012. A storm moving across the U.S. Gulf Coast battered parts of Alabama and Florida with up to 18 inches (46 cm) of rain on Saturday with authorities in Pensacola, Florida, declaring a state of emergency and sending out boats to rescue residents of flooded homes. REUTERS/Michael Spooneybarger (UNITED STATES - Tags: ENVIRONMENT)

A man walks along the shore as he sells colourful swimming floats in Laiya, Batangas province, south of Manila June 1, 2012. REUTERS/Cheryl Ravelo (PHILIPPINES - Tags: BUSINESS SOCIETY)

Toddlers Olivia Lewis-Brown (L) and Jasmine Evans, ages 3 and 2 make the most of the sunshine and play in the sea at Brighton southeast England March 24, 2012. REUTERS/Luke MacGregor (BRITAIN - Tags: ENVIRONMENT SOCIETY)

A flotilla activist holds a lifesaver from the "Audacity of Hope" ship during a demonstration outside the U.S. embassy in Athens July 3, 2011. Greece offered to ferry humanitarian aid to the Palestinian Authority on Sunday after banning a pro-Palestinian flotilla bound for Gaza from departing from its ports and arresting the captain of one of the boats. REUTERS/Yiorgos Karahalis (GREECE - Tags: POLITICS CIVIL UNREST)

Members of a local winter swimmers' club walk to go swimming in the Yenisei River with the air temperature at about -36 degrees Celsius (-32.8 degree Fahrenheit) in the Siberian city of Krasnoyarsk December 12, 2010. REUTERS/Ilya Naymushin (RUSSIA - Tags: ENVIRONMENT)

Activists of Environment Greenpeace perform next to a giant life ring, during talks on climate change, in Cancun beach December 10, 2010. A deadlock on whether or not to preserve Kyoto after 2012 has hobbled the two-week meeting in Mexico, and countries will have to agree to defer the issue if they are to unlock other deals on climate aid and protection of rainforests. REUTERS/Henry Romero (MEXICO - Tags: POLITICS ENVIRONMENT)

A child plays on a waterslide at Chaoyang sand beach theme park on a hot day in Beijing July 29, 2010. Weather in eight of the ten major cities across China is set to be slightly hotter than usual in August, forecasts from the China Meteorological Administration showed on Wednesday. REUTERS/Jason Lee (CHINA - Tags: SOCIETY ENVIRONMENT)

A pedestrian passes a life buoy beside the River Thames near Big Ben and the Houses of Parliament in central London April 6, 2010. Prime Minister Gordon Brown on Tuesday confirmed May 6 as the date for a parliamentary election which could bring down the curtain on 13 years of Labour rule. REUTERS/Toby Melville (BRITAIN - Tags: POLITICS ELECTIONS)

A worker replaces a life buoy beside the River Thames near Big Ben and the Houses of Parliament in central London April 6, 2010. Britain's Prime Minister Gordon Brown on Tuesday confirmed May 6 as the date for a parliamentary election which could bring down the curtain on 13 years of Labour rule. REUTERS/Toby Melville (BRITAIN - Tags: POLITICS ELECTIONS)

Volunteers prepare to put a lifebelt on a Christmas tree in a dried riverbed on the outskirts of Beijing, as part of an environmental campaign by Oxfam Hong Kong, December 12, 2009. The group called for developed countries attending the U.N. climate summit in Copenhagen to pledge more funds to help developing countries cope with climate change. REUTERS/Grace Liang (CHINA - Tags: ENVIRONMENT)

Labourers collect water chestnuts from a pond at Motte Majra village in the northern Indian state of Punjab November 18, 2009. REUTERS/Ajay Verma (INDIA AGRICULTURE FOOD)

Members of a local winter swimmers' club walk on the banks of the Yenisey River with an air temperature of around -25 degrees Celsius (-13 degrees Fahrenheit) in the Siberian city of Krasnoyarsk January 24, 2009. REUTERS/Ilya Naymushin (RUSSIA)

City workers pass a life-buoy on London Bridge during the evening rush-hour in the City of London October 8, 2008. REUTERS/Toby Melville (BRITAIN)

A U.S. soldier waves to residents at the newly-opened Mithaq swimming pool in Baghdad's Sadr City August 30, 2008. REUTERS/ Thaier al-Sudani (IRAQ) BEST QUALITY AVAILABLE

South Korean marines with life buoys look at their peers during a military swimming exercise at their training field in Pohang, about 370 km (230 miles) southeast of Seoul, July 22, 2008. The South Korean government is considering sending its Marine Corps to Dokdo islets, called Takeshima by Japan, and building a hotel there as part of countermeasures against the recent territorial claim of Japan over the disputed islets, the government said on Sunday, local media reported. REUTERS/Jo Yong-Hak (SOUTH KOREA)

African illegal immigrants try to hold on to lifebelts thrown from a Spanish civil guard vessel after the makeshift boat they were riding in capsized during a rescue operation at sea off the coast of Fuerteventura November 12, 2004. Their boat, carrying some 36 immigrants, overturned as the civil guards' vessel manouevered to rescue them off Fuerteventura, the closest of Spain's Canary Islands to the African coast. REUTERS/Juan Medina FR05070011 PH/ABP BEST QUALITY AVAILABLE

An African would-be immigrant tries to hold on to a lifebelt thrown from a Spanish civil guard vessel after the makeshift boat he was in capsized during a rescue operation at sea off the coast of Fuerteventura November 12, 2004. Their boat, carrying some 36 immigrants, overturned as the civil guards' vessel manoeuvred to rescue them off Fuerteventura, the closest of Spain's Canary Islands to the African coast. Some 29 were rescued and seven disappeared. REUTERS/Juan Medina FR05070011 PH/THI BEST QUALITY AVAILABLE

A lifebelt sits in flooding caused by a tidal surge in Great Yarmouth, eastern England, November 9, 2007. Police urged thousands of British families to leave their homes on Friday as the Norfolk and Kent coasts braced for severe flooding from a tidal surge in the North Sea. REUTERS/Darren Staples (BRITAIN)

An elderly man is rescued from his flooded house in Villahermosa November 3, 2007. Thousands of people perched on roofs in southern Mexico on Saturday, desperate to be evacuated from flooding caused by heavy rains that has left most of Tabasco state under water and 800,000 people homeless. REUTERS/Tomas Bravo (MEXICO)

A man sits on a life ring on the shore of the beach in Guanabo, outside Havana August 12, 2007. REUTERS/Claudia Daut (CUBA)

Rowers prepare to race during the World Rowing Junior Championships at Shunyi Rowing and Canoeing Park in Beijing August 10, 2007. The venue is also where the 2008 Beijing Olympic Games rowing competitions will be held. Athletes and officials at this week's championships, the first trial of 26 Olympic test events taking place this year, were unanimous in their praise for the rowing lake built to the northeast of the Chinese capital. REUTERS/David Gray (CHINA)

Competitors participating in the Ironman Triathlon start the swimming leg in Nice, southeastern France, June 24, 2007. Competitors will swim 3.8 km (2.4 miles), then cycle 180 km (110 miles), before finishing with a 42.195 km (26 miles) run. REUTERS/Pascal Deschamps (FRANCE)

A dragon-boat leader takes the victory flag when his team arrives to the finish line during a boat race in Taipei June 19, 2007. The dragon boat festival commemorates the death of Chinese poet Qu Yuan who drowned in 277 B.C.. REUTERS/Nir Elias (TAIWAN)

Indonesian engineers observe a new tsunami detection buoy in Banten province, April 11, 2007. The buoy is deployed off the western shore of Java island on Wednesday, an official said, as part of efforts to revive its early warning system hit by technical problems. REUTERS/Dadang Tri (INDONESIA)

A giant buoy that reads "S.O.S. Climate" floats during a Greenpeace protest at Copacabana beach in Rio de Janiero April 4, 2007. REUTERS/Bruno Domingos (BRAZIL)

Juan Medina, Reuters photographer based in Argentina, has won third place in the Spot News Singles catagory at the World Press Photo 2004 contest announced February 11, 2005 with this picture of African would-be immigrants being rescued off the Canary Islands. The prestigious competition is the world's largest annual press photography contest. The photo was taken at sea off the coast of Fuerteventura November 12, 2004. REUTERS/Juan Medina AA

An African would-be immigrant tries to hold on to a lifebelt thrown from a Spanish civil guard vessel after the makeshift boat he was in capsized during a rescue operation at sea off the coast of Fuerteventura November 12, 2004. Their boat, carrying some 36 immigrants, overturned as the civil guards' vessel manoeuvred to rescue them off Fuerteventura, the closest of Spain's Canary Islands to the African coast. Some 29 were rescued and seven disappeared. REUTERS/Juan Medina FR05070011 PH/THI also see: GF2E44P11QG01

African illegal immigrants try to hold on to lifebelts thrown from a Spanish civil guard vessel after the makeshift boat they were riding in capsized during a rescue operation at sea off the coast of Fuerteventura November 12, 2004. Their boat, carrying some 36 immigrants, overturned as the civil guards' vessel manouevered to rescue them off Fuerteventura, the closest of Spain's Canary Islands to the African coast. REUTERS/Juan Medina FR05070011 PH/ABP also see: GF2E44P11L101

African would-be immigrants try to save themselves by holding onto floating objects after their makeshift boat overturned during a rescue operation by Spanish civil guards off the coast of Fuerteventura, November 12, 2004. The boat, carrying some 36 immigrants, overturned as the civil guards' vessel manouevered to rescue them. REUTERS/Juan Medina FR05070011 AS also see: GF2E44P119N01

African would-be immigrants hold on to lifebelts thrown from a Spanish civil guard vessel and try to climb aboard after the makeshift boat they were in capsized during a rescue operation at sea off the coast of Fuerteventura November 12, 2004. Their boat, carrying some 36 immigrants, overturned as the civil guards' vessel manouevered to rescue them off Fuerteventura, the closest of Spain's Canary Islands to the African coast. Some 29 were rescued and seven disappeared. REUTERS/Juan Medina PH

African would-be immigrants hold on to lifebelts thrown from a Spanish civil guard vessel and try to climb aboard after the makeshift boat they were in capsized during a rescue operation at sea off the coast of Fuerteventura November 12, 2004. Their boat, carrying some 36 immigrants, overturned as the civil guards' vessel manouevered to rescue them off Fuerteventura, the closest of Spain's Canary Islands to the African coast. Some 29 were rescued and seven disappeared. REUTERS/Juan Medina PH

African would-be immigrants try to climb aboard a Spanish civil guard vessel after their makeshift boat capsized during a rescue operation at sea off the coast of Fuerteventura November 12, 2004.Their boat, carrying some 36 immigrants, overturned as the civil guards' vessel manouevered to rescue them off Fuerteventura, the closest of Spain's Canary Islands to the African coast. Some 29 were rescued and seven disappeared. REUTERS/Juan Medina FR05070011 pictures of the month November 2004 PH/acm also see: GF2E44P11ED01

Cuban migrants trying to reach the U.S. coast in Florida ride in and on a
1951 Chevrolet truck, converted into a marine vessel with air-filled drums
for flotation and a propeller driven off the driveshaft for propulsion, July
16, 2003. The U.S. Coast Guard Cutter Key Largo repatriated 12 Cuban
migrants riding in and on the vehicle back to Cuba after they were notified
by an Immigration and Customs Enforcement aircraft that they had located the
floating flatbed truck. The truck was sunk as a hazard to navigation.
Picture taken July 16, 2003. REUTERS/U.S. Coast Guard-Handout EDITORIAL USE
ONLY PP03070087 Pictures of the month July 2003

HB/

Coast guards rescue an illegal immigrant from the sea off the coast of
southern Spanish town of Barbate October 8, 2002. A boat carrying scores of
world-be immigrants from Africa overturned off the coast of Spain, leaving
at least seven dead and two missing, authorities said. Among the dead were
one Moroccan man and six women from sub-Saharan Africa, including some who
were pregnant. REUTERS/Anton Meres PP03050011 PP03110073 RFGE

SP

Coast guards rescue an illegal immigrant from the sea off the coast of
southern Spanish town of Barbate October 8, 2002. A boat carrying
scores of world-be immigrants from Africa overturned off the coast of
Spain, leaving at least seven dead and two missing, authorities said.
Among the dead were one Moroccan man and six women from sub-Saharan
Africa, including some who were pregnant. REUTERS/Anton Meres

SP

Pupils blow their whistles during a demonstration wearing lifebelts
wich reads 'Save the education' in downtown Berlin June 12, 2002.
Several hundreds of pupils, students and teachers took part in a
demonstration organized by the educational union GEW to protest against
the financial cut backs in the German educational system.
REUTERS/Fabrizio Bensch

FAB

German Environment Minister Juergen Trittin (L) smiles next to Julia
Ratzmann of the German subsidiary of the Pacific Information Center,
after he received a lifebelt with the inscription "Save the Pacific"
during a news conference at the international climate protection
conference in Bonn, July 19, 2001. Delegates from around 180 countries
began their negotiations about the implementation of the Kyoto Protocol
on the worldwide reduction of greenhouse gases.

MAD/

Germany's coach Erich Ribbeck strolls past a lifebelt as he takes a walk in the grounds of the German training camp in Vaals June 14. Germany will play England in their second match of the European Championship.

RKR/RUS