This site from The Evergreen Project gives an easy to understand description of the Sponges.

This site from the University of California discusses the structure of sponges and how these primitive animals manage to exist.

Students investigate the properties of synthetic and natural sponges in this activity, to determine the capacity of each to absorb water. Afterward, they discuss other questions they have about sponges, and complete an assessment in...

Find out about some the most simple organisms in the Animal Kingdom, the sponges.

An interesting article about a kind of sponge that a hermit crab carries around on its back.

Some bottlenose dolphins in Australia use a sponge (kind of like a glove) to protect the dolphin when it pokes around on the bottom of the bay. Do they figure this trick out on their own or do they inherit this ability or is it something...

This site gives an in-depth description of a sponge, including its behavior, appearance, reproduction, and classification. The site includes photos and illustrations and an interactive quiz to test your understanding.

Discusses sponges that may be kept in salt-water aquariums, along with what they need to live. Good general information.

Answer five comprehension check questions about cnidarians and sponges in this interactive quiz.

Read about this startling discovery of a species of sponge that is not a filter feeder like all other sponges, but is actually carnivorous. Strange!

Activity demonstrates that water has weight.

A brief summary about sponges. Included are an organized chart about the body systems in a sponge, links to other websites about sponges, and an online quiz about sponges.

Learn how sponges eat, grow, reproduce on this colorful page.

Click on the name of the class of sponge you want to know about, and you'll see a picture and a description of it.

Takes a look at the fossils of sponges, and describes what they mean in terms of evolution.

The Encyclopedia of Life presents this in-depth overview of Sponges (Porifera), including their habitats, size, conservation status, and much more. Images of this phylum and maps of its global distribution can also be found here.

Students examine images of faults and folds, then experiment with two models to collect evidence to determine how the structures formed.

Spicy fried tofu. It's a delicious and savory main dish at many Asian restaurants. Stab a golden-brown piece, bite into it, and the juice inside rushes out, filling your mouth with rich flavors. Continue eating and you find the texture...

Discusses sponges that may be kept in salt-water aquariums, along with what they need to live. Good general information.

Discusses sponges that may be kept in salt-water aquariums, along with what they need to live. Good general information.

Discusses sponges that may be kept in salt-water aquariums, along with what they need to live. Good general information.

Discusses sponges that may be kept in salt-water aquariums, along with what they need to live. Good general information.

Discusses sponges that may be kept in salt-water aquariums, along with what they need to live. Good general information.

Discusses sponges that may be kept in salt-water aquariums, along with what they need to live. Good general information.