Jeremy Bentham: The question is not, “Can they reason?” nor “Can they talk?” but, “Can they suffer?”
Sea turtles (superfamily Chelonioidea), sometimes called marine turtles, are reptiles of the order Testudines. The seven extant species of sea turtles are: the green, loggerhead, Kemp's ridley, olive ridley, hawksbill, flatback, and leatherback. Wikipedia