Notonecta glauca-inspired smart devices

There are abundant resources in the sea, and mankind has been relying on these resources for the past few centuries. However, the contradiction between the rapid growth of population and the shortage of global freshwater, food, and energy supply is becoming increasingly prominent. The vast surface of the ocean is a huge liquid-gas interface, highly active and accompanied by a large amount of resource and energy exchange. This Preview highlights a design in a recent issue of Matter of a backswimmer (Notonecta glauca)-inspired device (BSD), which adapts to the posture of floating and deep diving in the ocean to realize the convenience of marine resources exploration.