According to foreign media reports, when corals are under the pressure of high temperature and other factors, coral bleaching will occur, which will lead to the rejection of symbiotic algae in corals. In response, scientists are studying how to save coral reefs by pumping cold water from the depths of the ocean. “Upwelling” occurs naturally when the wind blows water away from coastal areas, allowing nutrient rich water to move up from below and replace it. < / P > < p > recently, a group of researchers, led by Dr. Yvonne sawall of Bermuda Institute of Ocean Sciences, began to study whether artificial upwelling can prevent coral bleaching by cooling the waters where coral reefs are located. < / P > < p > first, they collected fragments of three living corals from a depth of 15 feet (5 meters) in the sea venture shoal area of Bermuda, and then they were placed in the Institute’s aquarium and kept at different temperatures for three weeks. < / P > < p > in the end, the researchers found that exposure to cool, deep water for less than two hours a day reduces the thermal stress of corals, as evidenced by the fact that these corals have more active algae than those exposed to high temperatures without cooling pulses. More importantly, the deeper and colder the water, the more obvious the effect. < / P > < p > “our study shows the potential benefits of pulsed Au (artificial upwelling) during heat waves,” says sawall. “The next thing to do is to find the right Au environment, maximize the benefits, and minimize the potential harmful side effects of Au on corals and their supporting ecosystems.” IPhone 12 whole family barrel model exposed: it’s a tribute to iPhone 4