This title is licensed for public performance by the MPLC umbrella license. Explore the depths of the oceans and discover some of the planet's most spectacular species. From the humble huddling of schools of bait fish to the bioluminescent defense of vampire squids, the program investigates predator-prey relationships and the harsh realities of life underwater. Footage from around the globe reveals an environment that covers two-thirds of the Earth's surface yet remains largely unknown. (2 DVDs; one disc is teacher resources).