ReefBase ReefBase: World Conservation Monitoring Center - A global database on coral reef systems and their resources. (Cnidaria) http://www.wcmc.org.uk/data/database/reefbase.html
Introduction to the Cnidaria Introduction to the Cnidaria: Sea anemones, medusae, jellyfish, corals. (Cnidaria) http://www.ucmp.berkeley.edu/cnidaria/cnidaria.html
Cnidaria Cnidaria: Information and resources for researchers studying all aspects of cnidarian biology. (Cnidaria) http://www.ucihs.uci.edu/biochem/steele/default.html
Tropical Australian Stinger Research Unit Tropical Australian Stinger Research Unit: Information about the biology and ecology of box jellyfish (Cubozoa), plus how to prevent and treat stings and current research in Queensland, Australia. (Cnidaria) http://www.jcu.edu.au/interest/stingers/
Phylum Cnidaria Phylum Cnidaria: General information about the phylum that includes jellyfish, coral, hydra. (Cnidaria) http://animaldiversity.ummz.umich.edu/cnidaria.html
Coral Health and Monitoring Program Coral Health and Monitoring Program: Services to help improve and sustain coral reef health throughout the world. Part of an international network of coral reef researchers. (Cnidaria) http://coral.aoml.noaa.gov/
Cnidaria (Coelenterata) Cnidaria (Coelenterata): An attractive and informative site from the Tree of Life Project, by Daphne G. Fautin and Sandra L. Romano. (Cnidaria) http://tolweb.org/tree?group=Cnidaria&contgroup=Animals