Companies spend a lot of money on research and design but Mother Nature has been doing it for billions of years and her "findings" are free. Engineers are catching on and embracing the field of biomimicry - using nature's designs to solve human problems. If you think about it, almost every challenge faced by humans has been solved by nature. Shelter, transportation, communication, energy.
Now submarines could start taking cues from fish.
We've come a long way since the inventor of Velcro was inspired by a bur. Like the bur these ideas really stick.