Ocean Beach (also known as O.B.) is a beachfront neighborhood of San Diego, California. Geography Ocean Beach lies on the Pacific Ocean at the estuary of the San Diego River, at the western terminus of Interstate 8. Located about northwest of Downtown San Diego, it sits south of Mission Bay and Mission Beach and directly north of Point Loma. The O.B. community planning area comprises about 1 square mile (742 acres), bounded on the north by the San Diego River, on the west by the Pacific Ocean, on the east by Froude St., Seaside St. and West Point Loma Boulevard, and on the south by Adair Street. History Prior to European contact, the Kumeyaay people inhabited Ocean Beach and had established the fishing encampment of Hapai. The Kumeyaay visited the area to conduct fishing and food processing operations, as mussels, clams, abalone, and lobsters were harvested from the area. The beach's initial name was Mussel Beach, for the mussels available there. Its current name, Ocean Beach, was given in 1887 by developers Billy Carlson and Albert E. Higgins. The pair built the Cliff House, a resort hotel, and subdivided the area into lots. To promote their subdivision, Carlson and Higgins organized various activities, including mussel roasts and concerts. Despite their efforts, the development did not do well, because it was two and a half hours by carriage from downtown San Diego. They rented a locomotive, but by that time, the boom ended and the development was put on hold. The Ocean Beach Railroad, launched in April 1888, was a casualty of the economic decline. Passengers could take a ferry from San Diego to Roseville in Point Loma to ride the train to the Cliff House. Later, Higgins committed suicide, and a fire started by a fallen chandelier burnt down the Cliff House in 1898. Carlson sold the Ocean Beach tract to an Eastern financier, delaying its development for 20 years. Carlson and Higgins were not the first to file a subdivision map in Ocean Beach. They filed with the city on May 28, 1887, but on April 22 of that year J.M. DePuy filed "DePuy's Subdivision" on 15 blocks in the northern portion of O.B. One of the earliest residents of Ocean Beach was D. C. Collier, who bought oceanfront property there in 1887 when he was just 16. He later became one of the "fathers" of Ocean Beach, laying