'Bubble curtains' guard fish from hammering sound waves

... of new Tappan Zee Bridge. Construction workers use a pile driver Nov. 26, 2013, in the Hudson River in Tarrytown, N.Y. With pile driving for the new Tappan Zee Bridge underway, bubble curtains are used to protect fish from sound waves. A beeping ...

http://www.usatoday.com/story/news/nation/2013/12/25/tappan-zee-bubble-curtains-guard-fish/4201347/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+usatoday-NewsTopStories+%28USATODAY+-+News+Top+Stories%29