Biorocks are man-made rocks. The “rock” here is a steel structure that is installed in the seabed. It is connected to a power source – usually a solar panel that floats on the surface of the water.
Installing biorocks in the seabed is a novel technique to create artificial coral reefs. In this, biologists build a steel structure, sink it in the ocean and pass low voltage direct electricity through it. Biorock technology was originally developed by marine scientists Thomas Goreau and Wolf Hilbertz. The low-voltage direct current interacts with the minerals in the seawater and causes solid limestone to grow on a steel structure. It draws on a steel structure. It draws on the principles of electrolysis, where the electric current causes a chemical reaction to happen. Eventually, the limestone becomes solid, much in the same way that marine skeletons are formed. It is perfect breeding ground for aquatic life.
Picture Credit : Google