Red Knot, Horseshoe crab eggs, Horseshoe crab. The Delware Bay Estuary Project is an office of the U.S. Fish and Wildlife Service (Service) . The mission of the Service is working with others to conserve, protect, and enhance fish, wildlife, plants, and their habitats for the continuing benefit of the American people. Read about the priorities and principles (pdf 1.37 MB) of the Service.