Poplar Island is located in the middle bay. Nearly destroyed by erosion by the 1990’s,┬áPoplar Island has been partially restored to its 1847 outline.

The Poplar Island Paul S. Sarbanes Environmental Restoration Site, formerly known as the Poplar Island Environmental Restoration Project (PIERP) is the largest island habitat restoration project on the Atlantic coast.

The island now provides important habitat for birds and other wildlife.