Phylum Cnidaria

General information about the phylum that includes jellyfish, coral, hydra.
http://animaldiversity.ummz.umich.edu/cnidaria.html

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.
http://coral.aoml.noaa.gov/

Introduction to the Cnidaria

Sea anemones, medusae, jellyfish, corals.
http://www.ucmp.berkeley.edu/cnidaria/cnidaria.html

Underwater Field Guide to Cnidarians of Ross Island & McMurdo Sound, Antarctica

Spectacular photographs of Antarctica's sea anemones, jellyfish, hydroids and soft coral.
http://scilib.ucsd.edu/sio/nsf/fguide/cnidaria.html

Cnidaria (Coelenterata)

An attractive and informative site from the Tree of Life Project, by Daphne G. Fautin and Sandra L. Romano.
http://tolweb.org/tree?group=Cnidaria&contgroup=Animals

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.
http://www.jcu.edu.au/interest/stingers/

ReefBase

World Conservation Monitoring Center - A global database on coral reef systems and their resources.
http://www.wcmc.org.uk/data/database/reefbase.html

Cnidaria

Information and resources for researchers studying all aspects of cnidarian biology.
http://www.ucihs.uci.edu/biochem/steele/default.html