Museums take all kind of precautions to avoid danger or scary surprises inside their exhibitions. The notice about not touching the glass is perhaps the most well-known example. Yet there are still people that suddenly have trouble reading. They ignorantly do whatever they please, which in this case is tapping the window. You might not want to do that, pal.
Read more: https://www.viralviralvideos.com/2018/02/05/man-scared-to-death-by-shark/
