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Green crabs, menace or meal? Manomet’s green crab work aims to develop fisheries and markets that will provide a new source of economic opportunity for fishers and coastal communities. Utilizing an invasive species to diversify fisheries resources may ultimately enhance the future resiliency of New England’s coastal communities, and could serve as a unique example of how to mitigate and adapt to the ecological and socioeconomic impacts of climate-driven change. | Photo: P. McAleenan

The Small Sit | From Menace to Menu, Turning the Tide on Green Crabs

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Marissa McMahan, PhD, Senior Director of Fisheries, Manomet Conservation Sciences

Gabriela Bradt, Extension State Specialist, Aquaculture & Fisheries, University of New Hampshire

The European green crab is small but mighty—and not in a good way. As waters have warmed, this invasive species has wreaked havoc on east coast ecosystems from New England to Canada, threatening native shellfish, eelgrass beds, and the livelihoods of fishers. But what if this ecological disruptor could become an economic opportunity?


Join Marissa McMahan, PhD, Manomet’s Senior Director of Fisheries, and Gabriela Bradt of New Hampshire Sea Grant, for a bite-sized virtual science session on how Manomet, NH Sea Grant, and partners are tracking, studying, and rethinking green crabs. Since 2018, Manomet has led one of the most consistent green crab monitoring efforts along the Maine coast, gathering data with help from researchers, students, and community scientists. This research is already informing ecological management, outreach, and—most excitingly—innovative fishery development. This long-running program has contributed significantly to how the Northeast is approaching green crab mitigation through science, innovation, and public engagement to tame and utilize a resource rather than seeking to eradicate a well-established invader.


June 25 | 12:00 - 1:00 pm

This program is free, but registration is required.


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Nature Journaling Workshop

June 21 | 10:00am - 1:00pm

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Thursday Trivia Night

June 26 | 6 - 7:30pm

Friday Bird Walk

July 11 | 9 - 10:00am

Thursday Trivia Night

July 17 | 6 - 7:30pm

Friday Bird Walk

August 1 | 9 - 10:00am

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Manomet Alumni Reunion

October 10 - 13


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