 The world's rarest whale. Oh, wow. Try saying that five times fast. It may have washed ashore in New Zealand. DNA testing could take months to confirm this, but scientists believe it's a spade-toothed whale. It may be only the seventh ever found. No one knows how many there are, what they eat, or where they live in the Pacific. This one's about 16 feet long with a beak and teeth. Monica Ricks, CBS News.