malaka polamaka - take care of the ocean, the ocean take care of you. if we poison the ocean, the ocean will poison us. >> kimokeo takes me on a traditional outrigger canoe, for one final visit to an area known as the coral cemetery. this is what becomes of coral when it has died, and its remaining skeleton becomes brittle and collapses. >> when i think of a coral reef i think of an ecosystem that's full of life, colorful and structured, almost cathedral-like, but i have to say i'm a little heart broken right now because where i'm standing right now is indicative of what might happen to corals if the threats go uncontrolled, they'll probably look more and more like this. >> from the rainforest of the seas to a lifeless pile of rubble. and without change, it is a fate that could befall the world's coral reefs within most of our lifetimes. >> i've never seen coral bleaching like this, i've never seen this happening, where you see entire mounds of coral that are just completely on the verge of death. >> how does that make you feel? >> i'm sad, you know, it