The Prime Hook National Wildlife Refuge is a sanctuary for migratory birds and lies along the western shore of Delaware Bay. The refuge contains a variety of habitats, including freshwater and salt marshes, woodlands, grasslands, ponds, and forested areas. It supports 267 species of birds and a variety of reptiles, amphibians, and mammals. Here you will wind through the vast marsh visiting several ponds and finally reaching Petersfield Island near Route 16.