My wife gave me a new camera system for my birthday a couple of weeks ago and I wanted to ensure that it didn't get all beat up in NorCal diving, so I did some i'net searching for how to keep a lens cap on (and not lose it).
I stumbled across a photoessay on Wetpixel showing how a diver directed Cricket at Otter Bay to make a custom neoprene lens hood for his Nauticam housing and wide angle port. Hmm. Photoessay of a DIY project? Featuring Otter Bay? Sure enough, it was a post by our very own mo2vation!
See it here: http://wetpixel.com/forums/index.php...2Botter+%2Bbay
Here's mo2vation's lens hood: