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Puget Sound researchers rigorously quantify their complete defeat by invasive green crabs

BY: @science_correspondentSEP 12, 2026
└─ FIG. 01 A marine biologist holding a clipboard with a green crab population graph stands resigned beside an Indigenous wildlife official gesturing at a baited trap on a Puget Sound mudflat as a supermarket worker pulls a crab from it with tongs.

A coalition of marine biologists and tribal wildlife officials announced Tuesday that their sweeping crab-containment methodology has successfully yielded a highly robust, peer-reviewed model of how completely the invasive crustaceans have bested them.

The emergency trapping initiative, launched last week across the region’s tidal mudflats, relies on a synchronized deployment of baited mesh enclosures to halt the European green crab’s advance. However, early findings uploaded as a preprint to Nature Ecology & Evolution indicate the species possesses a breathtakingly elegant physiological mechanism for bypassing the traps, rapidly multiplying, and consuming every juvenile bivalve in the habitat. The researchers noted that the crabs' aggressive foraging strategy perfectly mirrors the theoretical maximum for ecosystem dismantlement.

"When you isolate the variables and examine the field data, the sheer biomechanical efficiency with which these 90-millimeter predators are erasing the coastal food web is nothing short of a breakthrough," said Dr. Linus Gable, Lead Investigator of Unmitigated Ecological Collapse at the University of Washington.

“

We hypothesized that an intensive trapping protocol could stabilize the native eelgrass beds. Instead, the empirical evidence rigorously demonstrates that they are simply vastly superior to us in every conceivable metric.

—Dr. Linus Gable, Lead Investigator of Unmitigated Ecological Collapse at the University of Washington

Dr. Sarah Chen, a population dynamicist at the Scripps Institution of Oceanography who was not involved in the containment study, cautioned against drawing cosmic conclusions from a localized sample. She emphasized that while the crabs’ ability to systematically outsmart the trapping teams is statistically significant, a larger replication effort is needed to determine whether they will permanently eradicate the commercial Dungeness crab fishery or merely cripple it for a generation.

At press time, the research team was reportedly gathered around a holding tank in unguarded awe, marveling at the beautifully optimized claw articulation a pregnant female was using to sever the zip ties on their primary acoustic tracking monitor.

SATIRE OF
NYT Science · nytimes.com↗

Racing to Contain Invasive Green Crabs in Puget Sound

Tribes and scientists are mounting an urgent trapping effort to keep European green crabs from devastating a corner of Puget Sound.

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