Down Under the Sea is a two-DVD documentary collection revealing mysteries and wonders of the deep. "The Big Blue" focuses on the planet's largest living creature, the majestic Blue Whale, with a bonus "Footprints on Water: The Nan Hauser Story" episode about the efforts of a tireless American conservationist. "Secrets of the Great Barrier Reef" reveals Australia's 1,200 mile-long treasure and the unique marine life that inhabit it. Colorful, wondrous, inspirational, and yet also a sadly cautionary tale about the depredations humanity continues to inflict upon the natural environment, Down Under the Sea is a top-notch pick and highly recommended as a gift for nature lovers as well as for public library collections. 2 DVDs, 140 minutes.