Clione limacina, known as the naked sea butterfly, sea angel, and common clione, is found from the surface to greater than 500 m (1,600 ft) depth. It lives in the Arctic Ocean and cold regions of the North Pacific and North Atlantic Oceans. More info: https://en.wikipedia.org/wiki/Clione_limacina Video: https://www.youtube.com/watch?v=8tyu4hqmxjk