Today's article mentions that he may have held on to the turtle as it dove deep, causing him to blackout. The Coast Guard has exhausted their search for him but the turtle team is going to keep looking. Here's part of the article
Llew Ehrhart, a UCF professor who was aboard the boat Thursday afternoon, said he called 911 after Lyon, an experienced sea turtle biologist and diver, was missing for four minutes.
"The third, fourth and fifth minutes were just horrible," he said Friday. "Something terrible went wrong once he got below the surface, and we don't know what."
Lyon was practicing the "rodeo-style" method of capture, which involves a diver jumping on a turtle, grabbing its shell, positioning it toward the surface and onto the boat.
Although the capture method has been used for decades without incident off the Florida Keys and other clear, shallow waters worldwide, it was one of the first times local researchers dove into the ocean instead of using nets.
Ehrhart said it was possible Lyon held on as the turtle forcefully dove to the bottom of the ocean, possibly blacking out. He didn't hit his head on the boat, nor was there a struggle visible underwater, Ehrhart said.
"We're pretty sure he did get a grasp with his left and right hands on the turtle shell," Ehrhart said. "That seems to be the only reason the turtle went down so fast."
Lyon, who had been working at the Marine Research Turtle Group for eight months, had been interested in studying the habits of adult green sea turtles and had been practicing techniques while also writing proposals for grants for satellite tags and biological analysis, Ehrhart said.
"We were right at the beginning of planning for this," he said. "He was absolutely committed, obsessed by the project. He was consumed by the project."
Earlier in the day on Thursday, the six researchers had used nets to capture turtles for research about 400 yards from the shore. When the winds changed, Lyon asked Ehrhart to spend the rest of the boat's gasoline on a final run down the coast in search of adult male green sea turtles.
"I knew how much it meant to him," Ehrhart said. "I wish I said no."