Architects and biologists have teamed up to restore storm-damaged coral reefs off the coast of Hong Kong. Last summer, researchers from the University of Hong Kong installed hexagon-shaped tiles on the seafloor in Hoi Ha Wan Marine Park. The tiles will provide a solid surface on which new corals can grow.
The team created the tiles using a 3-D printer, which squeezed out layers of terracotta clay in a swirling pattern. After the tiles hardened, scientists placed them underwater and attached fragments of living coral. Over time, more corals should naturally stick to the structures. “One day I hope there will be a thriving coral reef, with our tiles as a foundation,” says marine biologist David Baker.