Artificial skin can help robots recognize the difference between picking up inanimate objects and living marine life, such as starfish or shellfish. Its sense of touch could be useful for ocean purification, underwater exploration, and even deep-sea mining on the ocean floor.
The tactility of artificial skin relies on a phenomenon known as the magnetoelastic effect, the changes that occur in a material's magnetic field when you push or pull it. This phenomenon is not affected even underwater…
Source: www.newscientist.com