When someone says “giant snake,” your brain probably jumps straight to a movie scene — you know, a huge slithery beast lurking in the jungle, ready to snatch a person like it’s grabbing a snack.

His hair was a mess of seaweed, the straggly green strands bobbing up and down on the surface of the water. His expressionless face looking skyward, drained of its life. How he died, they didn’t know.