Locals claim that the San Juans [1] offer the finest cold-water diving on earth, noting that Jacques Cousteau called them his second-favorite place to dive. When clear, one can glimpse a thriving ecosystem teeming with fish, amenomes, coral, starfish, octopi, and more.
Let Naknek Charters (Spring St. Landing in Friday Harbor, 360/378-2772 or 800/303-8386, www.naknekcharters.com [2]) show you around. This charter company offers dive trips off of its 45-foot boat, training, equipment, and scuba tank filling.
Links:
[1] http://www.moon.com/destinations/washington/san-juan-islands
[2] http://www.naknekcharters.com