Interesting

This is one carried over from the old forum

You can find some product-info on the following manufacturers websites:

Bluefin Robotics: http://www.bluefinrobotics.com/
Hydroid: http://www.hydroidinc.com/

The following link might be interesting also:
The HUGIN Mine Reconnaissance System: http://www.mil.no/felles/ffi/hugin/start/program/hmrs/