They may not be green but they do live in an ocean far, far away, and now they share the same moniker as the diminutive Jedi master in the Star Wars blockbusters. Yoda purpurata -- to be exact -- is the name now given to one of three new species of deep sea acorn worms or Enteropneusts discovered 2,500m or around 1.5 miles below the surface of the Atlantic Ocean....