What is Jack looking at underwater?
I've watched this movie several times (one of my favorites) but there's a scene that I've never been able to figure out. When Jack and Hector go into the lake and split up, Jack sees something and goes in for a closer look. As he does, the music becomes very ominous and builds as if something terrible is about to happen. All I've ever seen is what looks like the base of a tree trunk but there's obviously something else there or they wouldn't have added that music. What am I missing there? Thanks for anyone who can help.