ANSAN, SOUTH KOREA - APRIL 23:  Students and citizens hold candles as they pray for the safe return of missing passengers who were travelling aboard south Korean ferry the Sewol, which sank off the coast of Jindo Island, on April 23, 2014 in Ansan, South Korea. The confirmed death toll is reported to have risen to 150, with more than 150 people still missing.  (Photo by Chung Sung-Jun/Getty Images)