At Bluewater and a few other places, great price if you're like me and have ben holding off on getting it. I had the 9-18 and been using it topside, now I will be using it uw as well.
Zen Dome Port for Olympus 9-18mm wide-angle lens WA-100-EP | Bluewater Photo & Video
Zen Dome Port for Olympus 9-18mm wide-angle lens WA-100-EP | Bluewater Photo & Video