" Without oceans, rain would be rare. Without rain, Earth would become one huge desert." [John Kershner/Hemera/Thinkstock]

" The Oceans are the most important support system for Life On Earth, maybe even necessary for evolution on any planet in the first place. Without oceans we'd be too busy dealing with everything in the world being on fire. It's a situation that would make it hard to focus on anything else." [source: Cullum]