bluff point state park is a public recreation area and nature preserve on an undeveloped peninsula located between the poquonnock river and mumford cove on long island sound in the town of groton, connecticut. the state park's encompass a barrier beach, steep cliffs, forested sections, and tidal wetlands; are designated as a coastal reserve. recreational opportunities include hiking, mountain biking, boating, saltwater fishing, and shell fishing. the park is managed by the connecticut department of energy and environmental protection.