This three-disc set of National Geographic documentaries brings viewers under the oceans for some up-close looks at nature's most wondrous sea creatures. As the largest animals on Earth, the peaceful undersea giants "The Great Whales" (1978) have been hunted by man to the brink of extinction; in the award-winning entry "Ocean Drifters" (1995), you'll hitch a ride on the ocean currents with such remarkable creatures as the loggerhead turtle, Portuguese Man-o-War, and seahorse; an amazing underwater odyssey is in store when you check out "Jewels of the Caribbean Sea" (1994), a look at baby dolphins, manatees, coral reefs, sea grasses, and other inhabitants of the Caribbean; learn how global warming and pollution may be contributing to a surprising "Jellyfish Invasion" (2007); "Humpbacks: Inside the Pod" (2010) chronicles the comeback of the endangered whales; and "Shark Island" (2010) delivers you to a Pacific Ocean locale where undersea predators lurk in huge numbers. 6 1/4 hrs. total. Widescreen; Soundtrack: English Dolby Digital 5.1.