The Marine Safety Division is responsible for the procedure and management of the maritime basic safety and lifeguard division as properly as the harmless and lawful use of the 9 miles (14 km) of shorelines, 5,300 acres (2,100 ha) of oceanfront home, waterways and marinas. Land place: 5.54 sq. miles. Population density: 19,814 people today for each sq. mile (extremely higher).