-Sea lamprey also use their mouth to attach itself to stones in order to take a rest during migration from marine to fresh -Not native to Great Lakes but is invasively prevalent. Came from the Welland Canal through Lake Ontario 1835. In Lake Erie in large numbers these days -Classified in 1758 by Linnaeus -Over $60 million is spent annually by a joint US/Canada fund to rid the Great Lakes of the invasive sea lamprey - Since the onset of sea lamprey control in the Great Lakes, lake-wide estimates of adult sea lamprey abundance ranged from 261,000 in 1981 to 12,000 in 1994 in Lake Superior, 169,000 in 2004 to 29,000 in 1997 in Lake Michigan, 450,000 in 1993 to 42,000 in 1997 in Lake Huron, 33,000 in 2009 to 1700 in 2002 in Lake Erie, and 297,000 in 1982 to 23,000 in 1994 in Lake Ontario.