REUTERS: Four Nigerians, rescued in Brazil, survived 14 days on a ship's rudder →

On their tenth day at sea, the four Nigerian stowaways crossing the Atlantic in a tiny space above the rudder of a cargo ship ran out of food and drink.

They survived another four days, according to their account, by drinking the sea water crashing just meters below them, before being rescued by Brazilian federal police in the southeastern port of Vitoria.

Their remarkable, death-defying journey across some 5,600 kilometers (3,500 miles) of ocean underlines the risks some migrants are prepared to take for a shot at a better life.