Turn over a rock on the beach or pull up a buoy from a dock and you'll find the surfaces covered with critters. But many of those animals aren't supposed to be there—they're invasive alien species. What makes a species invasive and how are these animals putting local ecosystems at risk? Join Dave Remsen, Director of our Marine Resources Center, in our latest #MBLSciShoots video to learn all about the local alien invasive species in Woods Hole.

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