KEY WEST, FL—Fellow scuba divers who witnessed Sam Gemitter's wild gesticulations, inaudible vocal noises, and bulging, wide-open eyes, remained unclear Monday if he was expressing either joy or terror at the sight of something he saw behind a giant coral reef. "He swam back to us pretty fast, but I didn't know if he was trying to get away from what he saw, or if he wanted us to come see," snorkeler Brian Celli said. "He was definitely excited one way or the other." As of press time, Gemitter had not returned his equipment to the scuba-rental booth, either because he is still enjoying the beauty of the ocean depths or is dead.