![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEik1UhVgtTT3Y1KLJ4K_ZMK9_n0fKAkI6eaTPg09F-drf__X4cUGbGZ1wTePIq5BNkoLW2airIGulEqJZfday2Eok-SwZ43aEUx7kYu5TbQQJwM6mN_VUgSyPrxMtXuLzM8I-lt/s320/sea+cucumber.jpg)
Nice trick to have skin that goes hard when danger threatens, and turns soft and flexible in safe conditions.
A
sea cucumber can do it, and now scientists have borrowed the secret to make a polymer that is hard when dry and soft when wet.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjf29oaYJufHH1VuUcxCi5pGf-KmKoU4K9FKrv_bt0ILx32VaJrXrTJvuKipKesUipXG6R96yaVJ8chVzniMMdhdUQSL9UY-hD8yKCrx5OoKWktmrjLwJ9twBy2KhatpgIXTcUu/s200/blue+pill.jpg)
The next hope is to do the same thing with electricity instead of water, for applications like a vest that goes bulletproof when needed. Or perhaps there might be some other applications, like replacing the blue pill.
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