The world's first self-controlled robotic fish were unveiled Thursday at the London Aquarium. Inspired by the common carp, these lifelike creatures swim around a specially designed tank and react to their environment. The robotic fish took three years to develop and will eventually live alongside real fish at the aquarium. See video(1) of the robotic fish in action and read more at BBC News(2).

1. http://news.bbc.co.uk/media/news_web/video/40881000/nb/40881856_nb_16x9.asx
2. http://news.bbc.co.uk/2/hi/science/nature/4313266.stm