Fautin, Daphne G. Department of Ecology and Evolutionary Biology, University of Kansas, Lawrence, Kansas.
Last reviewed:January 2020
- Reproduction and propagation
- Skeletal features
- Fossil record
- Related Primary Literature
- Additional Reading
A subclass of cnidarian class Anthozoa that includes stony and black corals and sea anemones; also known as Zoantharia. With few exceptions, these animals are benthic as adults, living attached to firm substrata or burrowed into soft sediments; they occur at all latitudes, and from the high intertidal zone to the deepest parts of the oceans. As in all anthozoans, the adult form is a polyp—a cylindrical organism that has, at its free end, the single body opening, the mouth, which is surrounded by retractile, rarely branched, tubular tentacles (Fig. 1). The tentacles number from six to several hundred, but typically the number is approximately a multiple of six, which gives the subclass its name, Hexacorallia. The opposite end of the polyp is attached to or burrowed into the substratum, or it emerges from the tissue that unites the members of the colony. See also: Anthozoa; Cnidaria
The content above is only an excerpt.
for your institution. Subscribe
To learn more about subscribing to AccessScience, or to request a no-risk trial of this award-winning scientific reference for your institution, fill in your information and a member of our Sales Team will contact you as soon as possible.
to your librarian. Recommend
Let your librarian know about the award-winning gateway to the most trustworthy and accurate scientific information.
AccessScience provides the most accurate and trustworthy scientific information available.
Recognized as an award-winning gateway to scientific knowledge, AccessScience is an amazing online resource that contains high-quality reference material written specifically for students. Contributors include more than 10,000 highly qualified scientists and 45 Nobel Prize winners.
MORE THAN 8700 articles covering all major scientific disciplines and encompassing the McGraw-Hill Encyclopedia of Science & Technology and McGraw-Hill Yearbook of Science & Technology
115,000-PLUS definitions from the McGraw-Hill Dictionary of Scientific and Technical Terms
3000 biographies of notable scientific figures
MORE THAN 19,000 downloadable images and animations illustrating key topics
ENGAGING VIDEOS highlighting the life and work of award-winning scientists
SUGGESTIONS FOR FURTHER STUDY and additional readings to guide students to deeper understanding and research
LINKS TO CITABLE LITERATURE help students expand their knowledge using primary sources of information