Sea Lamprey (Petromyzon marinus) have been causing extraordinary damage to the fishes in the Great Lakes since the 1940's and humankind have had problems with control efforts ever since. Sea lamprey will attack any fish if given the opportunity. The fish populations have been drastically declining all over the Great lakes. With every new control effort follows a number of problems, therefore allowing the Sea lamprey to reproduce. Many fish species will be on their way to extinction if something is not done to fix the issue. So what do these creatures look like?
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