TetraPOT: A Green Sea Defence

Creating a Sustainable and Greener Coastal Line

TetraPOTs are four-legged concrete structures designed to dissipate the force of incoming waves by allowing water to flow around them. Unlike traditional tetrapods, TetraPOTs come with plant seeds in decomposable pots. When randomly distributed along coastlines, these TetraPOTs eventually interlock, creating a long-lasting sea defence of growing trees and roots that help keep the blocks in place. As the plants grow, their roots intertwine and gradually form a natural sea defence, preventing soil erosion and creating a habitat for other living organisms.

The design of TetraPOT not only addresses the functional aspects of sea defence but also enhances the aesthetic appeal by blending with the natural coastal environment. By combining artificial and natural elements, TetraPOT aims to create a sustainable and greener coastal line that protects the environment and provides a habitat for various species.

The manufacturing process of TetraPOT is simple and efficient. Metal cases are assembled and bolted at the coastal line, with a core pillar placed on top. Three sub-pillars are inserted into the holes of the metal case, attaching to the core pillar. Concrete is then poured from the top cover's gap. This streamlined process reduces material usage, time, and maintenance costs, as the plants eventually grab hold of the TetraPOTs, sustaining stronger sea defences.

TetraPOTs have dimensions of 1.5m*1.5m*1.5m (L*W*H) and weigh 1 ton. They are made of concrete, decomposable material, soils, and copper. The project started in August 2014 in Taiwan and was completed in February 2016 in Shanghai. TetraPOT has received recognition and was awarded the Silver A' Design Award in 2016 for its outstanding innovation and sustainable design.

TetraPOT is not just a sea defence system; it is a symbol of a sustainable future. By combining the strength of artificial structures with the resilience of nature, TetraPOT creates a harmonious and eco-friendly solution to coastal erosion, protecting our environment and preserving the beauty of our coastlines.