I have a Dolphin from Ocean Images for my Sony and it works well. They also carry a G1/G2 Housing:
http://www.oceanimagesinc.com/products/housings/canon/canon-gl_housings.htm
UnderSea Video Housings also carries a housing that will work with the Canon via LAN-C connection.
http://www.usvh.com/index.html
I purchased the monitor I use in my Dolphin from them - great guys to talk to.
Hope you find a housing that works for you
Cheers
William
http://www.oceanimagesinc.com/products/housings/canon/canon-gl_housings.htm
UnderSea Video Housings also carries a housing that will work with the Canon via LAN-C connection.
http://www.usvh.com/index.html
I purchased the monitor I use in my Dolphin from them - great guys to talk to.
Hope you find a housing that works for you
Cheers
William