I strongly recommend NOT
using a dive housing for surf photography. They are way too heavy (a big deal when you're swimming in 12 ft surf) and overpriced. If it's for surf get an SPL, PPS, or Aquatech.
I couldn't be happier with my SPL which what's used by the majority of surf photogs/vidiots http://www.splwaterhousings.com
It's lightweight, bombproof and cost $1300