For centuries, Cape Cod has been the northern range boundary for blue crabs, an ecologically and economically important predator in Atlantic coastal estuaries. In recent years however, people have begun to see blue crabs in waters north of Cape Cod. As conditions continue to warm, will we see blue crabs expand their populations into the Gulf of Maine? What will this mean for the salt marshes and invasive green crabs if a new predator comes to town? (video link) 
Tanya Rogers is a PhD student at the Northeastern University Marine Science Center. She is studying crab populations in Waquoit Bay and in many other estuaries north and south of Cape Cod.
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