- MASNA
- International Club Forums
- MidWest Region-Reef Club Forums
- Central Illinois Marine Aquarists (CIMA)
- Central Ohio Reef Aquarists (CORA)
- Central Wisconsin Reef Club-(CWRC)
- Chicagoland Marine Aquarium Society (CMAS)
- Cincinnati Marine Aquarium Society
- Northern Ohio Reef Keepers
- Grand Rapids Marine Aquarium Society (GRMAS)
- Greater Iowa Reef Society
- Greater Minnesota Reef Society
- Indiana - Fort Wayne Marine Aquarists Society (FWMAS)
- Northwest Indiana Marine Aquarium Club
- Indiana Marine Aquarium Society (INDMAS)
- Indiana - Tri-State Reef Club
- Joliet Area Reef Club
- Kansas City Reef Association
- Mahoning Youngstown Saltwater Enthusiast Association (MY-SEA)
- Marine Aquarium Society of Illinois Valley (MASIV)
- Marine Aquarium Society of Michigan (MASM)
- Mid-Missouri Saltwater Aquarium Club
- Muskingum Valley Reef Club
- Nebraska Reef Club
- Nebraska Marine Society
- Northern Illinois Reef Club
- Northern Indiana Marine Aquarium Society (NIMAS)
- Northern Wisconsin Reef Society
- Northwest Ohio Reef Association (NORA)
- Red River Valley Aquarium Club
- Rockford Reefers
- Saint Louis Area Saltwater Hobbyists (SLASH)
- Saltwater Enthusiasts Association of Springfield
- Saltwater Enthusiasts Association of St. Louis (SEASL)
- Springfield-Decatur, Illinois Reef Builders (SDIRB)
- Springfield Illinois Saltwater and Reef Fanatics
- Upper Peninsula of Michigan Marine Aquarium Society
- Wisconsin - Fox Valley Reefers Club (FVRC)
- Wisconsin Reef Society (WRS)
- NorthEast Region-Reef Club Forums
- Aquarium Reef Keepers of Southwest Connecticut
- Boston Reefers Society
- Brooklyn Aquarium Society
- Capital District Marine Aquarist Society
- Capital Reef Aquarists Club
- Chesapeake Marine Aquaria Society
- Greater Connecticut Area Regional Forum
- Delaware Reef Club (DRC)
- Delaware Valley Reef Club (DVRC)
- East Coast Reef Club
- Long Island Reef Association (LIRA)
- Lycoming County Reef Club
- Maine - Salt Water Addicts of Maine (SWAM)
- Mason Dixon Reef Club
- New Hampshire Reef Club (NHRC)
- New Jersey Reefer's Club
- North Central Pennsylvania Aquarium Reef Society (NCPARS)
- Northern New York Reef Society (NNYRS)
- NY Reef Club
- 3 Rivers Marine Aquarium Society
- Reef Aquarium Society of Charlotte (RASOC)
- Reef Ecosystems Education For North Eastern Schools Trainees (REEFNEST)
- Southern Tier Reef Society
- Susquehanna Reef Club
- Upstate Reef Society
- SouthEast Region-Reef Club Forums
- Alabama Reef Addicts
- Appalachian Reef Society
- Aquarium and Coral Reef Organization of Sarasota (Acros)
- North Carolina Marine Aquarium Society
- Carolina Coast Reef Keepers
- Chattanooga, TN Reefers
- East Tennessee Reef Club
- Emerald Coast Reefers
- Florida Marine Aquarium Society (FMAS) - Miami/Ft. Lauderdale
- Florida Reef Aquarium Group (FRAG)
- Jackson Area Reef Club (JARC)
- JRAM-Jax Reef and Marine Club
- Louisville Marine Aquarium Society
- Marion Ocala Reef Enthusiasts (MORE)
- Memphis Area Reef Society (MARS)
- Middle Tennessee Reef Club (MTRC)
- Mid South Reef Society
- Mobile Bay Reef Keepers
- Mountain State Marine & Reef Society (MSMRS.ORG)
- Nashville Area Reefers
- North Florida Marine Society
- North Tennessee Reef Club
- Northeast Florida Marine Aquarium Society (NFMAS)
- Northeast Kentucky Reef Association
- Northwest Arkansas - "In 2 Deep" Reef Club
- Orlando Reef Caretakers Association (ORCA)
- Palm Beach Marine Aquarium Society (PBMAS)
- Reef Keepers of Myrtle Beach
- South Florida Reef/Saltwater Aquaria (SFRA)
- Southwest florida marine aquarium society (SWFMAS)
- Southwest Virginia Reef Club
- SPRING HILL AREA REEF KEEPERS (SHARK)
- Tampa Bay Reef Club
- TC.ARK = Treasure Coast Area Reef Keepers
- Tennessee Reefers
- Treasure Coast- Florida Reef Aquarium Group (TC-FRAG)
- Upstate Reefers (Greenville/Spartanburg/ Anderson)
- West Tennessee Marine & Reef Aquarium Club
- SouthWest Region-Reef Club Forums
- AMRC (Alamogordo Marine and Reef Club)
- Arizona - Fish & Reef Aquarium Group (FRAG)
- Arizona - Northern Arizona Marine Aquarium Society (NAMAS)
- Arizona-Sierra Vista/Tucson Reef Keepers
- Central Oklahoma Marine Aquarium Society
- Cpod - The Maricopa pod of reefers
- Dallas/Fort Worth Marine Aquarium Society (DFWMAS)
- New Mexico Aquarium & Coral Society (NewMACS)
- Oklahoma Marine Aquarium Society (OMAS)
- Southwest Tank And Reef Society (STARS)
- The Saltwater Club of Central Texas
- West Region-Reef Club Forums
- 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