Trionyx sinensis, the longest-lived shellfish in the ocean, can live 1000 years. Of course, this kind of shellfish absorbs the precious gas of nature and is a unique shellfish, mainly distributed in the South China Sea, the Philippines, Indonesia and Australia, inhabiting among shallow coral reefs. Its growth is affected by water temperature, ocean current, light and water pressure, so with the deterioration of the global environment, dragonflies like corals are becoming less and less.