Freshwater and Marine Ectoprocts or Bryozoans: Ectoprocta
Sea Mat (electra Pilosa): Species Account
Physical characteristics: Sea mats form star-shaped or wide sheets of calcified crusts on seaweeds, rocks, and shells. The zooids are longer than they are wide and are sometimes egg-shaped. They have four to twelve spines, giving the colony a "hairy" look.
Geographic range: They are found all around the world in oceans with waters that are not too cold or warm.
Habitat: Sea mats live in shallow marine waters down to approximately 164 feet (5 meters). Their colonies are attached to small species of marine algae (AL-jee) and on the shells of mussels and other mollusks.
Diet: They eat bits of algae floating in the water.
Behavior and reproduction: Very little is known about the behavior of sea mats.
They reproduce asexually by budding. Sexual reproduction involves fertilized eggs released into the water where they hatch into larvae.
Sea mats and people: This species does not impact people or their activities.
Conservation status: Sea mats are not considered threatened or endangered. ∎
FOR MORE INFORMATION
Brusca, Richard C., and Gary J. Brusca. Invertebrates. Sunderland, MA: Sinauer Associates, 2003.
Smith, Douglas G. Pennak's Freshwater Invertebrates of the United States: Porifera to Crustacea. New York: Wiley and Sons, 2001.
McKinney, F. K. "Feeding and Associated Colonial Morphology in Marine Bryozoans." Reviews in Aquatic Sciences (1989): 255-280.
The Bryozoa. http://www.nhm.ac.uk/hosted_sites/iba/pages/bryozoa.html (accessed on March 29, 2005).
Bryozoa Home Page. http://www.civgeo.rmit.edu.au/bryozoa/default.html (accessed on March 29, 2005).
International Bryozoology Association. http://petralia.civgeo.rmit.edu.au/bryozoa/iba.html (accessed on March 29, 2005).
What Is a Bryozoan? http://www.sms.si.edu/irlspec/IntroBryozoa.htm (accessed on March 29, 2005).
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Animal Life ResourceMollusks, Crustaceans, and Related SpeciesFreshwater and Marine Ectoprocts or Bryozoans: Ectoprocta - Physical Characteristics, Behavior And Reproduction, Sea Mat (electra Pilosa): Species Account - GEOGRAPHIC RANGE, HABITAT, DIET, ECTOPROCTS AND PEOPLE, CONSERVATION STATUS