A manatee died at a Florida aquarium in late April, and following a full pathology and necropsy report, there are new developments as to the possible cause of the mammal's sudden death. According to the Mote Marine Laboratory and Aquarium in Sarasota, Florida, the resident manatee, Hugh, died unexpectedly on April 29th after showing changes in his behavior until he suddenly became unresponsive in his habitat. According to a statement following his passing, the aquarium said the manatee and his brother Buffett, were the world's only manatees to participate in voluntary, detailed behavioral research designed to aid manatee conservation. But...