- Albany Area Reef Society (AARS)
- Boston Reefers Society
- Brooklyn Aquarium Society
- Delaware Valley Reef Club (DVRC)
- Capital District Marine Aquarist Society
- Capital Reef Aquarists Club
- Connecticut Area Reef Society (C.T.A.R.S.)
- Delaware Reef Club (DRC)
- Hudson Valley Reef Keepers
- Long Island Reef Association (LIRA)
- Maine - Salt Water Addicts of Maine (SWAM)
- New Jersey Reefer's Club
- Niagara Reef Society (NRS)
- North Central Pennsylvania Aquarium Reef Society (NCPARS)
- Northern New York Reef Society (NNYRS)
- Philadelphia Area Reef Club (PARC)
- Pittsburgh Marine Aquarium Society
- Reef Ecosystems Education For North Eastern Schools Trainees (REEFNEST)
- Salthub (New Hampshire Reef Club)
- Southern Tier Reef Society
- Susquehanna Reef Club
- Upstate Reef Society
- Vermont Marine Aquarists (VMA)
- Washington D.C. Area Marine Aquarist Society