However, with such vascular innovations; other, more functional robotic fish like SoFi may be given the extra push they need for true exploratory utility. SoFi was developed by scientists to help with underwater research. The robo-fish can swim alongside real fish to give new insights into life under the sea. The robotic fish named SoFi was developed by MIT's Computer Science and Artificial Intelligence Laboratory (CSAIL) and can be controlled with sound. SoFi swims by flapping its hydraulic-pump powered tail, back and forth. The clever robot can also control its own buoyancy through adjusting an internal foam material. During test dives in the Rainbow Reef in Fiji, SoFi was able to swim down 15 meters for around 40 minutes at a time.