The name “sea pig” conjures up many images, but probably not that of a deep-sea holothurian echinoderm. There are three species of sea pigs all in the genus Scotoplanes. They inhabit deep sea floors often high densities and are thus sensitive to deep sea trawling.
Check out these videos to see the sea pig in action! (Canadian Scientific Submersible Facility)
Finally, to learn more click here for a link to the Echinoblog.