The local fishermen looked on skeptically. From the deck of a small motorboat scuba divers grabbed odd chunks of ceramic–which could be described as rocky brains stuck on stumpy stilts–and plunged into the aquamarine waters. The dive team assembled the pieces as a few triggerfish circled around to investigate the commotion. After just two air tanks (about an hour each), they had locked all of the items together into the final product: an artificial coral reef.
Image: https://www.fastcompany.com
