Grunion Run 🌕

Okay, so I just had to share about my latest Grunion Run adventure! If you've never experienced it, you're truly missing out on one of nature's coolest spectacles. I remember hearing about grunion for years, but actually seeing them for the first time under a full moon at midnight? Absolutely magical! So, what exactly are grunion? They're these small, silvery fish famous for their unique spawning ritual where they literally come out of the ocean and onto the sand to lay their eggs. It's not just any beach trip for them; it's a meticulously timed event tied to the tides and the moon phases, usually taking place on certain nights during the spring and summer. They ride the waves all the way up the beach, the females dig themselves into the sand, lay their eggs, and the males fertilize them. Then, with the next big wave, they're back in the ocean, leaving their precious eggs to incubate until the next high tide washes them back out to sea. It's wild to watch! People often ask about the "grunion run glow." It's not that the grunion themselves glow with bioluminescence – though that would be even cooler! Instead, the "glow" often refers to the shimmering mass of fish reflecting the moonlight as they flop around on the wet sand. Or, it's simply the general ethereal atmosphere of being on a dark beach, lit only by the moon and the distant city lights, witnessing thousands of these fish. There might be some plankton or other organisms in the waves that produce a subtle bioluminescence, but the grunion themselves are just naturally shiny. It's truly a sight that feels otherworldly. If you're thinking of catching a Grunion Run yourself, especially if you're already looking ahead to the grunion run 2026 schedule like I am, here are my top tips! First, you absolutely have to check the official schedules. The California Department of Fish and Wildlife (CDFW) website is your best friend for this. They publish predicted run dates and times for Southern California beaches. Remember, these runs usually happen a few nights after the new and full moons, typically one to three hours after the high tide. While places like Ocean Beach Pier are well-known spots, many sandy beaches along the coast can host them. When you go, dress warmly – even on a summer night, beach air can get chilly! A good flashlight is essential, but try to use one with a red filter if you can, as bright white lights can disorient the fish. A small bucket or cooler is handy if you plan to observe them closely or (during open season, and if you have a fishing license) collect a few. Just be mindful of the rules; there are "closed seasons" when you can only observe and not collect. The most important thing is to be respectful of these amazing creatures. Keep noise to a minimum, avoid sudden movements, and let them do their thing. It's an incredible natural phenomenon, and being part of it feels like a secret club. I'm already counting down the days until my next grunion run!