Hydrilla_USGSBy George Richert, News 4 Reporter

NORTH TONAWANDA, N.Y. (WIVB)- It doesn’t look very threatening, but biologists are trying desperately to keep it out of the Great Lakes.

It’s called hydrilla, an invasive plant that can grow up to twenty feet long and if it’s allowed to take over, boats can barely get through it. That’s why the US Army Corps of Engineers has been out this week raking out hydrilla from the Erie Canal.