The Aerial Robotics Lab at Imperial College London has created a flying fish drone titled the 'AquaMAV.' The flying fish drone is a swimming robot that is also able to jump out of the water. The researchers that created the AquaMAV published the relevant findings in a paper, which was published in an issue of Science Robotics.
The AquaMAV uses combustible power as well as water in order to power itself. The system runs on calcium carbide, which is mixed with water to produce acetylene gas. The gas is then routed into a combustion chamber with air and water. The chamber is ignited, in order to move the water out to propel the flying fish drone out of the water.
Image Credit: Imperial Colledge London