This week we bring you photos from Japan, Pakistan, Florida and London.
Police officers pray for their colleagues lost in the Japanese tsunami which hit last March, whilst behind them lays a huge fishing trawler. The scene of a Pakistani town-centre canal is shocking, as rubbish is discarded into the little remaining water. Snow covers frosty houseboats in picturesque Little Venice in London. In Florida, Destin Harbour is becoming restricted as Norriego Point shifts into the entrance, and in Japan a ship drills for the unfamiliar methane hydrate, which could provide energy for hundreds of years.