A playful interactive ecosystem which was projected onto the floor for the visitors to interact and play with.The water surface rippled underneath the visitors feet and each visitor got a swarm of underwater creature attached to guide them and to take care of by avoiding the predator fish eating the swarm. It was a start for an ecosystem-like installation where visitors can feed their swarm with resources floating around. Creatures of the swarm would either aggress the other peoples swarms or try to mate regarding to the players behaviour. The system evolves from crossbreeding the inhabiting creatures.