hmmm - you mean the Ouroboros?if you believe that Enlil and his brother Enki came here from Niburu to create a slave race to mine gold - then Enlil is "Yahweh" the old testiment "god" and Enki is the Ocean dweller who tried to help humanity by teaching us things like how to make metals from ore, how to mine ore, agriculture, etc - but neither are benevolent really - but Enkiki cared more about us than Enlil - sounds like the sea serpent might be Enkian... not sure. Again, Mark gave me the resources to come up with these ideas... but Zacharia Sitchin's books on the Sumerian tablets and what he gleaned from reading them - corroborates that story of Enlil and Enki.
I think all "myths" really happened. I think all beings that are now "myths" are real.
You know, I learned everything I know by listening to the podcasts of Mark Passio at https://whatonearthishappening.com - he teaches the occult underpinnings of what is going on and gives marvelous research tools - it is quite fascinating stuff. I would recommend that you avoid any of his recent stuff because he has been so angry since his wife's death, but the early podcasts really give an overview of the Dark Occult aspects that have been going on since the dawn of time. I love this work.
RE: Are the elements being manipulated (tarot reading)