A tiny robot-fish has been designed by scientists to remove microplastics from oceans. This 13-mm-long fish will swim around and adsorb the microplastics through its body. What is special about this fish is that its body is soft, flexible and self-healing. It is also a self-propelled fish. With the help of a light laser system in its tail, the fish can swim and flap around at almost 30 mm a second. It is similar to the speed at which plankton drifts in moving water.