Filming of the Batman Begins sequel, The Dark Knight, has moved to Hong Kong this month but early into production there, it has already hit some snags.

The movie, which will be directed again by Christopher Nolan, is supposed to have a scene where Batman (Christian Bale) jumps from a plane into Hong Kong harbor. But that scene had to be omitted when the producers found out that the water quality in the harbor was too dangerous to swim in.

Based on samples gathered in the area prior to filming, the water was contaminated with all sorts of deadly organisms like the ones that cause salmonella and tuberculosis. The findings meant that the scene had to be cut and now the plan is just to cut to the building immediately.

Even World Wildlife Fund officials confirm that the water in Hong Kong harbor is too dangerous to swim in. Even Batman is no match for virulent organisms.