Desert Marine Society  
   Not-for-profit marine aquarium organization directed towards the salt water enthusiast, with education and learning being the primary interest.
   http://www.netpets.org/~dms/

The International Betta Congress  
   The is the official site of the International Betta Congress. The IBC is an international organization dedicated to the development of the beautiful Siamese Fighting Fish whose Latin name is Betta splendens.Lots of links to other Betta sites.
   http://www.ibcbettas.org

The International Federation of Online Clubs and Aquatic Societies  
   Offers webhosting for aquatic societies, awards, and a directory of clubs.
   http://www.ifocas.fsworld.co.uk

Aquatic Gardeners Association  
   International organization of aquatic plant enthusiasts -- source for articles, plant books, and back issues of the AGA Journal
   http://www.aquatic-gardeners.org/

Club & Society Index (Aquaria.info)  
   Searchable worldwide listing of aquarist clubs and societies.
   http://www.Aquaria.Info/modules.php?op=modload&name=database&file=index