One of the invasive species in Passamaquoddy Bay is the European green crab (Carcinus maenas). We have recruited a number of student groups taking part in our field courses to assist us in monitoring this species. In the field students collect data on carapace size, sex of the crabs, and if females have eggs. Students also mark the crabs with nail polish to denote those that have been counted. Monitoring data is conveyed to the Department of Fisheries and Oceans and can also be used by the schools for a variety of purposes.
Can you spot the green crabs?
Recording the data.
Marking with nail polish.
