Jörmungandr

What do you think Jörmungandr is? I mean, they say he wraps around the entire world, but as we know, the Earth isn’t flat. Could he just be a giant snake that lives in the water, and since we haven’t searched the entire sea, we haven’t seen him? Or is he something else?

Also I like to question things like this so honestly any other ideas like this i would love to see in the chat here