A passenger aboard a Carnival Cruise Line ship died this week after going overboard while the vessel was traveling from Celebration Key to Nassau, Bahamas.The man, whose name has not been released, climbed over the balcony railing of his stateroom on the Carnival Liberty and jumped into the water, according to the cruise operator.Crew members responded to the incident, initiating a search effort after the man plunged into the water, according to the cruise line.5 DANGEROUS CRUISE PORTS THAT TRAVELERS SHOULD RESEARCH BEFORE BOOKING EXCURSIONS"Carnival confirmed on Wednesday that a male guest on Carnival Liberty apparently climbed over his stateroom