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Researchers Study Invasive Mussels
Invasive zebra and quagga mussels were discovered for the first time in recent years around the Apostle Islands National Lakeshore on Lake Superior. National Park Service officials are working with researchers to find out how the aquatic hitch hikers got there.

Zebra mussels were first found in the Duluth-Superior harbor in 1989 while quagga mussels arrived in the ballast water of ships in 2005. The aquatic invaders tend to crowd out native freshwater mussels.

Julie Van Stappen with the Apostle Islands Nationahl Lakesore said divers discovered zebra mussels in 2015 and 2016 on the Sevona shipwreck near Sand Island.



 
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Marine Plastic May Affect Growth Rates and Health of Fish - Despite the fact that plastic pollution is a relatively recent phenomena, the problem has reached the far corners of the global oceans. Most of the obvious plastic pollution is inshore, such as those seen on beaches and intertidal area, but most of the plastic is out of sight in remote locations.


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