- Chico Reef Club
- D.A.R.C. - Denver Area Reef Club
- Big Country Reef Society (BCRS)
- Greater San Francisco Bay Area Reef Forum
- Las Vegas Valley Reefers
- Marine Aquarists Roundtable of Sacramento (MARS)
- Marine Aquarium Society of Colorado
- Marine Aquarium Society of Los Angeles County
- Monterey County Area Reefers Society
- Northern Valley Reefers (NVR)
- Puget Sound Aquarium Society (PSAS)
- Redding Area Reef Enthusiasts (R.A.R.E)
- Ridge Reefers
- Saltwater Enthusiasts Association of the Bay Area
- San Diego Marine Aquarium Society (SDMAS)
- Southern California Reefers
- Southern Colorado Marine Aquarist Society (SCMAS)
- Spokane Reef Society
- Wine Country Reefers