Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you have been placed in read-only mode.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
An extensive order of Porifera, which includes those that havethe skeleton composed mainly of siliceous fibers or spicules.
Share your knowledge with the community
Browse our collection of 300,000+ community-written definitions
