Florida Association of Benthologists (FAB) - Organization formed to share expertise and information on the use of aquatic community structures and processes (quantity and quality of the biota) to evaluate water quality conditions and ecosystem function.The Baltic Marine Biologists - An international non-governmental scientific organization whose aim is to promote studies on the biological diversity, structure, function and sustainable management of the ecosystems of the Baltic Sea Area (the Baltic Sea, Belt Seas, Öresund and Kattegat).
South Florida Aquatic Plant Management Society - Non-profit organization with interests in aquatic weed and plant management, growth of aquatic plants, and restoration of wetlands.
Southern California Association Marine Invertebrate Taxonomists - Promotes the study of marine invertebrate taxonomy in southern California. Site has extensive information on marine biota, zoology, and taxonomy.
British Marine Life Study Society - Homepage of the British Marine Life Study Society, devoted to study of the marine wildlife of the North-east Atlantic.
The North American Native Fishes Association - Group's goal is to bring together professional and amateur aquarists, educators, students, anglers, fish and wildlife officials, and researchers in conservation efforts of the inhabitants of lakes and streams.
Pacific Streamkeepers Federation - A non-profit society helping streamkeepers take action through support, education, and building partnerships
