From the surface of the ocean, it’s hard to see any visible signs of life below, but this remarkable ecosystem is teeming with life—life that is increasingly under environmental stress. Follow scientists with the TOPP (Tagging of Pacific Predators) project as they track 23 species, including loggerhead turtles, bluefin tuna, white sharks and sooty shearwaters, fitted with radio transmitters documenting their travels throughout the Pacific. Join the scientist in their analysis of the cutting-edge information about the state of the ocean’s health and the challenges facing all its inhabitants. A new look at our blue planet for ages 8-12.