A prototype Emerald Tutu is towed into position in Chelsea Creek, which leads to Boston Harbor, in front of large petroleum based fuel storage tanks, in Boston, Massachusetts, U.S., July 12, 2022. The Emerald Tutu project is testing small floating islands, with marsh grasses growing above the waterline and seaweed below, that could be deployed in larger networks to dampen incoming wave energy and retard storm surge in order to reduce flooding ashore and increase coastal resilience in the face of climate change. REUTERS/Brian Snyder