Witness one of Southern California’s most unusual natural events during the California Grunion Run at Crystal Cove State Park. During these rare nighttime events, thousands of silvery grunion fish swim onto the beach to lay their eggs in the sand, creating a phenomenon found almost nowhere else in the world. The runs occur only on specific nights tied to the lunar cycle and tidal patterns.Crystal Cove’s wide, dark shoreline makes it one of the best places in Orange County to observe the grunion run, where visitors can watch the spawning activity unfold under the moonlight. May runs are considered some of the best of the season, when spawning activity is typically at its peak. 🌊Learn about Grunion Run 📍 Discover More Orange County Events, 🌙Guides &🌙Experiences