Cheap ROV's for cave Work

[dmcfarlane]

These may have potential:
http://allthingsd.com/20130911/openrov-raises-funding-to-open-up-the-world-of-underwater-exploration/

DM.

 

[Duncan Price]

I made one of these though I just bought three motors from them and built the frame from conduit and L- and T-pieces.  The underwater video camera and monitor came from Maplin.  Cost about ?150 with a 20 m tether.

 

[gavinnewman]

I built one of these....  cost about !!!!!!  with 500m of cable... 
400m depth rating with broadcast quality HD cameras
Anybody got access to Fontaine de Vaucluse ??? 

Gavin