The US south and east coast has been infected with a massive amount of invasive lion fish. The lion fish can give lay over 3000 lion fish eggs a day. The only efficient way to kill lion fish is to send divers down who can only operate at depths up to 100 feet not far enough to reach were the lion fish hide. So people invented a robot that can identify a lion fish using 1000s of pictures it compares to its target. It the fires a spear that has a plastic container on the end that has high buoyancy, that takes the spear and the puffer fish up to the surface to be collect. The hope to deploy the 2018-19.
If you want to read more in depth: https://newatlas.com/lionfish-harvesting-robot/56041/
