Can Concrete Molds Revive Coral Reefs Ruined by Bombs and Climate Change?
The small boat set off from a tiny island in the Western Pacific Ocean, its destination only a few hundred feet away. Its cargo was dozens of chunks of concrete that each weighed 60 pounds, had a textured surface and evoked a white lotus leaf. One by one, the crew tossed the pieces overboard. Then three divers descended 20 feet to the seabed with nuts, bolts and steel rods. As they began fastening the concrete pieces on top of each other, hundreds of curious damsel fish gathered around them and three green turtles circled nearby. Within an hour, the structure was complete: an artificial reef standing 3 feet tall and 10 feet wide. This construction, on a recent Thursday morning near Pom Pom Island, Malaysia, was part of an effort to rejuvenate a small section of the Coral Triangle, which covers a wide section of Southeast Asia and is the most biodiverse marine region in the world. Pom Pom Island lies off the northeastern coast of Borneo, an area where fishermen have for decades used …





