SURABAYA, Indonesia - A sonar image showing a large, dark object under the sea was presumed to be the missing AirAsia plane, an official with Indonesia's search and rescue agency said on Wednesday. 'It's about 30-50 meters under water,' said the official, Hernanto. Crews are standing by to collect and identify bodies from the plane that crashed on Sunday during bad weather on a flight from Indonesia to Singapore. 'We are praying it is the plane so the evacuation can be done quickly,' Hernanto said.