Hotmail
Messenger
My MSN
MSN Directory
Purple and Yellow Tube Sponge |
||||||
 |
||||||
 |
||||||
| Sponges, considered to be the most primitive of the multicellular animals, are represented in the fossil record back to the Cambrian Period, at least 600 million years ago. The purple and yellow tube sponge displays one of the many different body forms typical of sponges. The interior body cavities of sponges provide shelter for a variety of small crabs, sea stars, and other marine invertebrates. | ||||||
|
||||||
| Joe Dorsey/Oxford Scientific Films | ||||||
|
||||||
|
||||||
| Appears in these articles: | ||||||
|
||||||
| Comparative Anatomy; Evolution; Animal; Sponge | ||||||
|
||||||
|
||||||
|
Advertisement
|
||||||||||||||||||||||||||||||||||||||
| |
||||||||||||||||||||||||||||||||||||||
© 2008 Microsoft
  |