Spend a night sitting on Southern California’s sandy shore waiting for the “grunion run.” Grunion are small sardine-size fish of the silversides family, which are among the few species of fish that actually come ashore to lay their eggs on sandy beaches. They are found from Southern California south to Baja California and arrive at night after the high tide around the new moon and full moon. Cabrillo Beach is one of the better places to observe the fish. Watch the silvery fish come up on the beach to spawn! Learn about the interesting mating rituals and growth of this curious fish.

The Aquarium opens at 8 p.m. and an auditorium program begins at 9 p.m., followed by guided observation at the beach. Warm clothing and a flashlight are recommended.