clean the bottom already.

I have seen several episodes shot in the same area at silver springs I guess. With the clear spring water, the visibility is excellent. There is man made debris on the bottom. I see water logged 2x4 planks of wood and other clearly man made junk. It is all lying in the same places and usually shot from the same angle. Why the film crew didn't clean it up a little or the park service clean it up, I don't know. I did silver springs and rode the glass bottom boats back in the 60s and everything seemed very clean so maybe they were in a different area.