@yourvid44: In 1995, divers found perfect geometric circles carved into the ocean floor in Japan. Nobody could explain them for 16 years. Then someone caught the builder in the act a 12cm pufferfish, working alone for 9 days straight, to build the perfect nest for a mate. Follow. #pufferfish #oceanmystery #oceanfacts #wildlife #japan

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Saturday 20 June 2026 12:26:04 GMT