Rockpile Beach is located at the south end of Heisler Park and is approximately 700 feet long. It is somewhat isolated, but at lower tides can provide an excellent spot to explore the tide pools, especially during the winter months. During extremely low tides it is possible to get close to Bird Rock, a bird sanctuary that is off limits to people. Swimming and bodyboarding are not permitted. The ocean floor is comprised almost entirely of rock, and getting in and out of the water can prove difficult. Sea urchins cover most of the rocks, which are often just below the surface.