Lurking below the surface in a tireless search for living flesh, sharks and barracudas are the most menacing DEMONS OF THE DEEP. Beautiful, thrilling footage of sharks, those incredibly efficient eating machines and their distant cousins the barracudas instills a new respect for natural selection. Filmed in the Bahamas, the beauty of the corals and sea plants highlight the fragile ferocity of these demons of the deep.

An extraordinary visual and musical experience off Australia’s Great Barrier Reef. Includes full color booklet.

Explore the fascinating and colorful marine life of the Caribbean with OCEAN AQUARIUM. More than 75 species of fish in their natural environment.

Twenty-five million years ago, 50-foot-long, 50-ton ancestors of great white sharks terrorized the seas. How sea creatures developed into these oversized killers and why they died out is the subject of PALEO WORLD SEA MONSTERS. Scientists look for a reason that mammals wound up in the earth's waters after evolving as land dwellers. Beginning with a much-ridiculed observation by Charles Darwin more than a century ago and eventually supported by a series of skeleton finds in the 1980s and 1990s, narrator Ben Gazarra takes viewers on a fascinating journey back to the moment a starving wolflike creature decided to take a little swim in search of food. The segment "Tale of a Sail" examines the early dinosaur known as Dimetrodon, a hippo-sized beast that carried a sail on its back and proto-mammalian teeth in its mouth. Paleontologists debate the function of the sail, but not the fact that the Dimetrodon straddled the line between lizards--which went on to dominate the planet for millions of years--and mammals, which were reduced to rodent-sized prey until dinosaur extinction.