NOAA
Noaa: Ocean Service Education: Corals
This Coral Tutorial is an excellent resource with diagrams, pictures, animations and short videos. All aspects of coral biology are discussed. As an added benefit, pdf versions of the site are available along with a subject review...
NOAA
Noaa: Fisheries: Elkhorn Coral
This interesting site examines the characteristics, distribution, and threats and concerns related to elkhorn coral.
NOAA
Noaa: Fisheries: Staghorn Coral
Threats and Concerns, characteristics, and distribution are the topics examined in this informative coral site.