Narrated by award-winning actor Peter Coyote, "Troubled Waters: A Turtle's Tale" features interviewers with marine biologists, ocean conservation experts and volunteers who rehabilitate injured, sick sea turtles and return them to the wild. The documentary examines the effects of global warming, water pollution, red tide and other human-made problems endangering sea turtles, including boat strikes, entanglement in fishing gear, and the dramatic escalation of a tumor-causing virus.