You wait for a while. Sooner or later (perhaps slightly sooner than later, but it's hard to tell without a microscope), a Fisherman comes by. He's probably the guy who caught that fish up there. He is a giant after all, so he chants something ominous as he approaches. It goes like, "You can try to run; You can try to hide; Something something; Something fried."
Begin subliminal messaging: door door door door door door door door door door door door door door door door
Run awaaaaaaaaaay. door door door door door
Hide from him.door door
door door door door door door< /sm>