rrreefs, a Zurich-based organization, specializes in designing and installing eco-engineered and 3D-printed artificial coral reef structures. The lego-like design, tailored for local environments, promotes habitat diversity and redirects currents. This approach facilitates the settlement of young coral, fostering marine life abundance with the ultimate goal of establishing self-sustaining reefs for coastal protection and community resilience. The hollow bricks within the structures create habitats for diverse marine species, contributing to a healthier and biodiverse reef ecosystem. Stream Foundation collaborates with rrreefs to monitor their coral restoration project in Pujada Bay in the Philippines.