Reefvive is a modular system for coral restoration that transforms spent coral gravel and oyster shells into a cement-free substrate designed to support the coral restoration process.
This system received recognition as part of the James Dyson Award program in 2026. Reefvive integrates innovations in circular materials to combat the growing pressure caused by rising ocean temperatures, bleaching, and human activity affecting coral reefs.
The development belongs to Yin-Rui Liao from National Taiwan University. The process begins with converting locally sourced marine waste into a durable composite suitable for 3D printing. The printed structures are inspired by the organic shapes of brain coral.
Reefvive's textured bases provide numerous attachment points for coral fragments. Three large holes allow individual blocks to be positioned vertically, creating more complex three-dimensional habitats. Folded side ridges improve underwater stability, and three support legs help anchor each base to the sandy seabed.
The modular design also allows blocks to connect without the need for additional clamps or fasteners, simplifying deployment and allowing for the adaptation of reef configurations.
Unlike traditional concrete-based restoration structures, Reefvive reuses discarded materials while creating spaces capable of accommodating both coral growth and other marine life.
The concept was tested in real-world conditions in collaboration with the National Oceanographic University of Taiwan. The team conducted underwater field trials, successfully planting 28 corals. According to the project group, the trial demonstrated a one hundred percent survival rate for the corals, as well as the initial colonization of the structures by algae, fish, sea cucumbers, and octopuses.
The next phase of the project aims to expand testing across various sites and refine the system for large-scale production, thereby offering a tangible solution to aid coral growth.