[gamblor956]

Your two requirements contradict each other. You can choose one or the other, but not both.

The world's militaries have invested a great deal of time and money into researching underwater sensors. The solution is not going to be discovered by random people on the Internet.

[skinkestek]

> The solution is not going to be discovered by random people on the Internet.

I'm fairly certain someone knows a number of things that have been discovered by random people on the internet.