"Fish Can Sneak Through Electric Barrier Into Lake Michigan"

"MILWAUKEE - The electric barrier on the Chicago Sanitary and Ship Canal that is considered the last line of defense to stop an Asian carp invasion of Lake Michigan has a problem: Fish can swim through it."

"A report by the U.S. Army Corps of Engineers and U.S. Fish and Wildlife Service revealed that fish can be transported across the electrified swath of canal when they get trapped in the wake of a barge.

Research also shows that the metal barges can essentially suck electricity out of the water as they motor through the barrier zone, creating a moving "bubble" of water that isn't pulsing with the intended electrical current."

Dan Egan reports for the Milwaukee Journal Sentinel December 24, 2013.