Harvard scientists have engineered miniature underwater robots that are capable of forming autonomous swarms like schools of fish. Each robotic fish, known as a “Bluebot,” is equipped with cameras and blue LED lights that sense the direction and distance of others inside water tanks. https://gadgets.ndtv.com/science/news/harvard-scientists-bluebot-robot-underwater-fish-swarms-2352520#rss-gadgets-science