"This green turtle was killed by a boat strike, an unnatural and unnecessary death for an endangered species," says Spiers. "Only recently deceased, it is partly decomposed, with the haunting view of the bare skull in contrast to the skin, which remains on the rest of its body, and the juvenile fish which have adopted the turtle carcass as a form of safe refuge. We came across this turtle by chance, a dispiriting sight at the end of a long and fruitless day at sea. I can only hope that this image acts as a reminder of the enormous human burden placed on turtles and the ocean as a whole."