East Islip Marina Park is a popular beach located in East Islip, United States. The beach is approximately 500 feet long and is known for its soft white sand. activities available at the beach include swimming, sunbathing, and picnicking. The park also offers a playground for kids and a marina for boating enthusiasts. Other amenities at the beach include restrooms, showers, and a concession stand. However, please note that there are no lifeguards on duty, so swim at your own risk.