Divers and non-divers will join The Dive Shop at Himalaya Bay for the annual Beach and Underwater Clean-up.  It is a part of a dive weekend that also includes certifying new OW divers and divers working on specialties and AOW.  Many of the participants come for the unlimited shore and inflatable boat diving and choose this weekend out of the month long weekend options because of the marine debris component.  http://azdiveshop.com/travel/Himalaya.htm