Crescent Beach State Park is a classic saltwater beach park with beach grass-studded sand dunes, ocean breezes, herring gulls, picnic areas and views of fishing boats and an offshore island. The park’s signature feature and namesake is a mile-long, crescent-shaped beach ideal for strolling and sunbathing, where relatively warm waters and light surf make swimming and boating a pleasure. A few feet from the crowded summer sands are trails for walking and nature watching.