It was detected near where the ARA San Juan went missing. Some fell on their knees or clung to a fence crowded with blue-and-white Argentine flags, rosary beads and messages of support. "They sent a piece of crap to sail," said Itati Leguizamon, wife of submarine crew member German Suarez. Whatever it was, U.S. Navy Lt. Lily Hinz said the sound detected "was not a whale, and it is not a regularly occurring sound." The San Juan lost contact as it was sailing from the extreme southern port of Ushuaia.

Source: ABC News November 23, 2017 13:54 UTC