The European green crab (Carcinus maenas) is a small, unassuming shellfish – but don’t let its size fool you! This crab is considered one of the world’s most damaging invasive species. Check out this webpage for information about what green crab looks like, where it came from and its names around the world.
Green Crab 101
Though a worldwide invasive species, European green crab is a recent arrival in Washington. Learn the basics of who this crab is and why it has raised concern in the state.
Green Crab in Washington
The presence of green crab in Washington could threaten native habitats and species. This leaves many people with questions about how green crab got here in the first place — and what we can do about it.
Identifying European Green Crab
The best way to protect shorelines from invasion by green crab is to learn how to recognize and report them. This page provides a detailed overview of how to tell green crabs apart from native crab species.
Quick Resources
This two-page informational handout provides an accessible introduction to the green crab. It is designed to be printed so you can keep it with you in the field or easily share it with family, friends and neighbors.
This webinar provides an overview of the green crab presence in the Pacific Northwest, and highlights the work of WSG Crab Team and many collaborators to intervene in their spread. This webpage answers some of the fundamental questions about green crab specific to their presence in Washington.