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Nature’s Tiny Artist: The White-Spotted Pufferfish Off the coast of Japan, a small male pufferfish becomes an underwater architect every mating season — using nothing but his fins to carve stunning, symmetrical circles into the sandy seafloor. Each masterpiece can span up to 2 meters (6 feet) wide and takes days or even a week to complete. These intricate ridges and valleys aren’t random — they’re designed to attract a mate. A female inspects the precision of his artwork, and if she’s impressed,