Randall Munroe's produced another in his series of his spectacular, gigantic charts of unimaginably large and complex things compared and rendered tractable by the human imagination. "Lakes and Oceans" has everything you need to cultivate an appreciation for the vasty depths and the ocean blue. Plus, a snarfworthy punchline at the deepest depths.
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.