Unmannedaquatic robots called jellyfish elimination robotic swarm (JEROS) have been developed by the Korea Advanced Institute of Science and Technology for the purpose of jellyfish population control. JEROS robots float on the surface of the water in two cylindrical bodies and attached motors allow them to move about the water in forward and reverse, as well as rotate 360°. An onboard camera detects swarms of jellyfish, and geographic information system-based data is used to specify a region for extermination and a path for the task is automatically generated. Once JEROS locates the swarm, the jellyfish are removed by a submerged net and a propeller is used to pulverize them.