RDL worked with the WWF Netherlands to design a range of reef units that were placed on the seabed of the North Sea as part of their larger oyster reef restoration project. The units were 3D printed in Rotterdam using D-Shape technology. 50 units were manufactured in sizes ranging from 50cm high to 120cm high and will be monitored over the coming years. This will be one of the largest research based projects assessing the effectiveness of the material and technology. This technology with its unique low carbon footprint sandstone material opens up endless possibilities for marine habitat construction and satisfies our goal to build beautiful reefs.