The Phylum Porifera includes the animals commonly known as sponges. This is a diverse group, with about 5000 known species. Most are marine, but around 150 species live in fresh water. Considered the simplest of the animals, the cells of sponges are organized into tissues, but the tissues are not organized into organs. Their bodies are a sort of loose aggregation of different kinds of cells. ... [MORE] 1. Hermit Crab Sponges - An article by Floyd Sandford about the sponges that are carried around by hermit crabs. 2. Introduction to Porifera - A good start on the biology of sponges, including phylogeny, life history, and ecology. 3. Khoyatan Sponge Page - Sponges of The Northeast Pacific - Photographs of four Classes of sponges in the Khoyatan Marine Laboratory. 4. Phylum Porifera (Sponges) - Description of the sponges and their taxonomy, from the Animal Diversity Web. 5. The Sponges of British Columbia - Descriptions of sponges by Curt Smecher. 6. Underwater Field Guide to Sponges of Ross Island & McMurdo Sound, Antarctica - Beautiful annotated photographs of sponges (Porifera) of Antarctica.

Help build the largest human-edited directory on the web. Submit a Site - Update a Site - Open Directory Project - Become an Editor

© 2008 Chamas Enterprises Inc.