Which is a pretty big issue. Local sources matter. For example the King Crabs in the Barents Sea are really invasive and are spreading like wildfire. In Norway

Which is a pretty big issue. Local sources matter. For example the King Crabs in the Barents Sea are really invasive and are spreading like wildfire. In Norway they are trying to hinder it's advancement and reducing it's population. Russia however, is currently more protective. After all they introduced them in the first place.