Are there any place in store or online that is around the bay area California that rents housings for underwater filming using the FX-1/Z1? I have a FX-1 and I'm going to Hawaii.

Dunno about the Bay area, but on Oahu, there are several.
Prior to a trip in May of this year, I Googled for a few and came up with several. Ended up renting from a place in Haleiwa, can't recall their name.