. . . "Video recordings for the hearing impaired"@en . "Nature television programs"@en . "Documentary television programs"@en . . . . . . . "\"Three-quarters of Earth is an alien world, lying beneath the surface of the oceans. And although it encompasses over half of the world's species, we know more about the surface of Mars than the bottom of the ocean. It's only recently that science has penetrated this world, revealing extraordinary life forms and vast sweeping landscapes on a scale that defies imagination\"--Container."@en . . . "Drain the ocean"@en . . . "See what lies beneath our seas"@en . . . . . . . . "Nonfiction television programs"@en . . . . .