December 11, 2025 — In Maine, lobstermen last year took home over a half-billion dollars in revenue.
However, that fishery remains under threat as warming waters drive invasive species into lobsters’ habitats, species that both compete for resources and hunt the native lobsters. Working lobstermen’s ecological knowledge can be key in untangling these complicated dynamics, according to a Northeastern University professor of marine and environmental sciences.
Using an in-depth survey and interview process of lobstermen in Maine and Massachusetts, Northeastern University professor of marine and environmental sciences Jonathan Grabowski and his intercollegiate team studied the innate knowledge that lobster fishermen have of complex food-web relationships and animal interactions within and across different habitats. Their findings demonstrate that the insights of lobstermen, and local fishermen more broadly, provide an invaluable understanding of changing ecosystems as fishery management practices struggle to keep up.
Life as a lobsterman
Grabowski, who is also affiliated with Northeastern’s Coastal Sustainability Institute, and his team study how marine ecosystems function and change, but also how management practices impact fisheries. Coastal waters, their paper notes, are warming at a speed faster than management strategies can keep up with.
Cue the lobstermen, which, Grabowski notes, is the term the industry prefers for lobster fishermen of any gender. Most of those interviewed have decades of fishing experience. “More often than not, it’s north of 25 years,” Grabowski says, and it’s common to encounter lobstermen with over 50 years of experience.