'A Life Illuminated' Documentary Trailer Profiles Bioluminescence Pioneer Dr. Edith Widder

Of all the great, unexplored environments on Earth, the ocean — so vast, so deep, so dark — inevitably tops any and all lists.

Oceans make up a staggering 71 percent of the planet, and the vast majority of those waters — again, the vast and deep and dark portions — remain dizzyingly unexplored.

It's never stopped marine biologist Dr. Edie Widder, an ocean obsessive and bioluminescence freak who has made it her business to not only explore the far reaches of the ocean, but to document it.