CNN CNNI Simulcast May 29, 2014 07:03:00
There was nothing else to listen to. >> reporter: after searching 329 square miles, the blue fin's mission is over. the search continues in august when private companies take over. meantime, a new potential lead. cnn has learned a sound that could have been the plane crashing was detected by underwater microphones. >> our analysis is designed to detect new events and earthquakes. my understanding is looking at the data to see if there was any impact with the malaysian airline. >> reporter: there's a network of 11 stations even ice breaks thousands of miles away in antarctica, but could it hear...