Learn About Sponges

Sponges are the most primitive macroinvertebrates living on N.A. west-coast shores. Intertidal forms tend to be low and encrusting, and are often colourful; subtidal forms are usually more erect, but usually more drably coloured. 

NOTE from the Old English sponge or spunge, derived from the L. spongia, referring to the animal. There are 3 main classes of sponges in the Phylum Porifera. Representatives of each live on the west coast, but largest and most visually obvious are the demosponges, and these comprise about 95% of all sponges commonly seen in the intertidal and shallow subtidal regions. Glass sponges of Class Hexactinellida live mostly in deep water. They are included in the ODYSSEY because of interesting work being done on them in British Columbia and because of the presence of unique glass-sponge reefs in this same province

© 2010 Thomas Carefoot

To learn about west-coast SPONGES: select a topic from the PORIFERA menu at the top of the page

OR: play the ANIMATION of the snail meeting the SPONGE

OR, if you want to see other animations: follow the snail on its ODYSSEY by CLICKING on any X-marked invertebrate on the map