Robot fish patrols harbors to fight pollution
The SHOAL robotic fish that can detect waterborne pollution in real time is undergoing trials in the port of Gijon in northern Spain. The 1.5m long fish and driven by a dual-hinged tail that enables it to move like a real fish. The fish can either work alone or in a group. It can map which pollutants in the water, and in what concentrations, sending the information to a base station using wifi.