What are tetrapods?

Tetrapod, in Greek, means "four legs". If you look at a tetrapod, you will see four legs sticking out of a central structure like a starfish. These four-legged tetrapods are nothing more than structures made of concrete that are used to prevent coastal erosion. The name has become so famous that even three-legged concrete structures are now also known as tetrapods.

Tetrapods are designed in such a way that they dissipate the force of incoming waves by causing water to flow instead of against it. They also reduce displacement by allowing the random distribution of tetrapods to interlock with each other. Due to their weight and design, tetrapods can remain stable even in the most extreme weather conditions. Several tetrapods arranged together to form an interlocking porous barrier that dissipates the power of waves and currents.