A new low-cost flexible sensor developed in Korea can detect a wide range of pressures and motions when wet or dry. It can monitor heart rate and even speech patterns. It uses octopus sucker patterns (very small small ridges) to adhere fully to both wet and dry skin and is comfortable for the user.
For more nature inspired technology see:
Many “inventions” of nature, slug slime, gecko feet and more are being explored by scientists for technological adaptation.