Green Crabs

Invasive Green crabs, Carcinus maenas, have been preying on soft-shell clams and other commercially important shellfish at alarming rates, driven by  seawater temperatures that have risen over the past 40 years. DEI has been studying the impacts of green crabs on soft-shell clams for 30 years.

Green Crab Research: 2013-2017

As part of DEI’s four year investigation into the soft-shell clam decline in Casco Bay, DEI examined the effectiveness of different methods to protect shellfish from green crabs and other predators. As part of this we conducted systematic green crab trapping in 2014 and 2015, and combined that [...]

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