Shai-Hulud

The Shai-Hulud, also called the Midgar Zolom, and Jörmungandr, is a fabled gargantuan eel said to lurk in Pantano's depths, worshipped as a god by primitive civilizations for at least the past ten thousand years. Its arrival is said to bring either great fortune or great destruction, and the Temple of Light and Temple of Darkness seem to imply that the Shai-Hulud played some role in ancient Jedi and Sith conflicts on Pantano.