Juneau Empire: Most of us are unaware that the health of the ocean underlies all life – even a cactus can’t live without the ocean. And almost everyone is unaware that this basis of life on earth is dying. Many marine biologists now call their work "documenting the decline." The ocean provides at least 70 percent of the world’s oxygen. Sylvia Earle, a world-renowned oceanographer and director of National Oceanic and Atmospheric Administration for many years, puts this figure at 85 percent. …