Shells left over after lobster processing are usually tossed into landfills. So in an effort to make them worth something and keep the money in the lobster industry, a University of Maine professor created golf balls with a core made out of lobster shells. They're also biodegradable, designed for golfing on cruise ships or courses near oceans and lakes. The problem is they only go about 70 percent of the distance of a regular golf ball, so you won't see them at the U.S. Open anytime soon.