According to the DEEP there are 97 Wildlife Management Areas in the state which together total 32,000 acres of protected land. They are largely a result of the Federal Aid in Wildlife Restoration Act of 1937, also referred to as the Pittman-Robertson (P-R) Act.
WMAs largely preserve habitat for many different species of animal, bird, and invertebrate with special interest given to grasslands, old fields, and coastal salt and freshwater marshes. They also provide public recreation for hiking, wildlife viewing, and photography but are usually more geared towards fishing, hunting, and trapping.
I believe I’ve been able to identify all 97 of these by scouring maps and online hunting resources and so far have visited 21.