Why scientists kill 9 million sea lampreys every year in the Great Lakes

At the June meet-and-greet organised by the GLFC, half a dozen sea lampreys posed for the cameras at the Capitol. One of them even sucked on the palm of Representative Bill Huizenga, as per a CNN report. Among the few things the entire Congress agrees on, this is one: the invasive sea lampreys must go.For the American coasts that thrive on their seafood population, the invasive species, also known as 'vampire' fishes or the 'vampire' of the Great Lakes, has had a devastating impact on the lakes' trout, salmon and whitefish population. And thus, have inspired what scientists often call the 'forbidden experiment'.Arrival of sea lampreysSea Lampreys were once native to the Atlantic Ocean. The first ones arrived in Lake Ontario in the 1800s, making their way from the Atlantic Ocean, through the Hudson River, following the Erie Canal.