Seatuck National Wildlife Refuge is located in the hamlet of Islip, New York, on the south shore of Long Island.

The refuge consists of 196 acres (0.79 km2) bordering the Great South Bay, separated from the Atlantic Ocean only by Fire Island.

Situated in a heavily developed urban area along Champlin Creek, the refuge is an oasis for many species of migratory birds and waterfowl.

Approximately one half of the refuge consists of tidal marsh, which serves a vast number of waterfowl in the winter months.

This article incorporates public domain material from websites or documents of the United States Fish and Wildlife Service.