Symbiosis : Interaction between two different organisms living in close physical association, typically to the advantage of both. Since the 21st century will challenge our understanding about nature and technology, the line between biology and technology will blur. Soil is the foundation of food and there are many living organisms which make soil alive and give it a good structure and texture. But those organisms are dissappearing from soil through chemical treatments, overplanting and monoculture. The bot is designed for agricultural purpose to give back the nutritions to the soil. The bot includes nutritions sensor on its back to sense food, navigate and digest while leftover soil particles and undigested organic matter pass out of the worm bot through the anus in form of cast. Worm cast is dark, moist, soil-colored, and very rich in nutrients.