High Complexity Reef Pod (image) University of Technology Sydney Share Print E-Mail Caption Created by Reef Design Lab, the metre-high pods are constructed from marine-grade steel and concrete and feature elements of 3D printed design. Half of the units have additional complexity in the form of triangular tiles. Data collected from the two different reef structures help inform future reef design. Credit Alex Goad Usage Restrictions Only with this story and must be credited Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.