What are Tetrapods?

    

    Tetrapod, in Greek means “four legged.” If you observe a tetrapod you will see four legs protruding from a middle structure just like a star fish. These four-legged tetrapods are nothing but concrete made structures used to prevent coastal erosion. The name has become so famous that now even the three-legged concrete structures are also known as tetrapods.
    The tetrapods are designed in such a way that they dissipate the force of incoming waves by making the water flow around rather than against them. They also reduce displacement by allowing the random distribution of tetrapods to mutually interlock. Due to their weight and design, tetrapods can remain stable even under the most extreme weather conditions. A number of tetrapods arranged together form an interlocking, porous barrier that dissipates the power of waves and currents.