Imagine stepping onto Jiahai Beach after dark and watching the waves light up like liquid sapphires—this surreal scene is happening right now in Maoming, Guangdong! As gentle swells roll ashore, bioluminescent algae transform the water into a dancing galaxy of blue sparks, creating a fairy-tale spectacle that's straight out of a fantasy novel.     The Science Behind the Magic: These "blue fairies" are actually trillions of tiny algae that glow when disturbed—nature’s own living glitter. The right mix of warm water, nutrients, and motion creates this electric-blue spectacle, painting the shore in strokes of neon.     Catch It While You Can:   This natural wonder is as fleeting as it is beautiful, typically lasting just 3-7 nights when conditions align. As word spreads, sunset brings crowds of awestruck visitors—phones ready—hoping to witness the ocean’s glow-in-the-dark secret.     Pro Tip: Visit on a moonless night for the most vivid glow, and let the waves light your way along China’s most magical shoreline. Nature’s rave is now in session!