October 8, 2025 — The European green crab, commonly found in the Long Island Sound, is becoming a beloved culinary dish known for its sweet, rich and complex flavor.
But unlike other types of standard seafood fare found on menus in Connecticut, the green crab is considered one of the “world’s most invasive species” to inhabit the icy waters off New England. The crab is believed to have come to the eastern Atlantic from western European waters over 200 years ago and is known for causing ecological harm as a voracious predator, consuming up to 40 half-inch soft-shell clams in a single day and eating a variety of shellfish including scallops, mussels and oysters.
According to the National Oceanic and Atmosphere Administration, green crabs are considered one of the most invasive species in the marine environment because they have very few predators, aggressively hunt and eat their prey, destroy seagrass and outcompete local species for food and habitat. The crab is now found from Maine all the way down to Delaware, according to the NOAA.