Why are European green crabs a concern?
• The European green crab is considered one of the world’s worst invasive species.
• These crabs feed on clams, mussels, and other native shellfish. While digging for their next meal, green crabs can destroy habitats that salmon rely on, such as eelgrass beds.
• Invasive European green crabs threaten Washington’s environment, coastal economies, and tribal and cultural resources.
• European green crabs have been blamed for the collapse of Maine’s soft-shell clam industry. One green crab can eat 40 half-inch clams a day. These crabs now threaten tribal First Foods and Washington’s shellfish and aquaculture industries.