South Africa’s Sardine Stampede
South Africa’s wild coast hosts a fishy festival each winter. Billions of sardines bunch together in schools so huge they can stretch for kilometers. The cool Agulhas current sweeps them northward along the coast, creating what locals call the Greatest Shoal on Earth. These massive schools attract everything with fins, flippers, or wings. Dolphins herd the fish into tight balls. Gannets dive-bomb from above like feathered missiles.