Explore the stunning Bay Area beaches of the Golden Gate National Recreation Area (GGNRA) in the spring and you may spot the fascinating Velella velella, also known as "by-the-wind sailors." These unique, jellyfish-like creatures wash up in great numbers during spring and early summer months along various shorelines, including San Francisco’s Ocean Beach as well as Marin County’s Rodeo Beach, Stinson Beach, and more. But hurry—these mesmerizing blue "potato chips" don’t stick around for long! 

Despite their resemblance to jellyfish, Velella are not true jellyfish, according to the National Park Service. The oval-shaped animals are part of a diverse group of organisms related to sea anemones and corals. With a two-inch-high triangular sail attached to their bodies, Velella are carried by the wind, not the currents, and can often be found stranded on beaches after storms. While their tentacles contain stinging cells, they’re harmless to humans, making them a safe and intriguing find for beachcombers. They could be irritating to the mouths and stomachs of dogs that may want to chomp them. 

Ocean Beach is a good place to spot Velella velella creatures. Linzy Lim / Parks Conservancy

The beaches of the GGNRA are part of a UNESCO Biosphere Reserve, so they make a perfect spot to find and photograph these rare marine invertebrates. Not only do the national parks near San Francisco offer stunning coastal views, they provide vital habitats for marine life. By visiting these parks responsibly, you're contributing to the conservation of these vital ecosystems. 

Don't miss out on the chance to experience this natural wonder—head to your nearest GGNRA beach this spring and discover the beauty of Velella velella before they disappear!