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Chapter 7: Simple Animals

Animal Diversity Web
At this site, you can find a lot of information about the organisms that make up the Animal Kingdom. Click on "Kingdom Animalia". Scroll down to "Phylum Mollusca" Read about the characteristics of mollusks and find out which group of Mollusks has a closed circulatory system?

University of California - Berkeley
This site is part of UC-Berkeley's Museum of Paleontolgy. This page has a brief description of sponges and discusses the characteristics that are unique to the phylum Porifera. Click on "Life History & Ecology". How do some sponges feed on bivalves?

Wonders of the Sea: Cnidarians: Simple but Deadly Animals
Different kinds of stinging-cell animals are described here. What structures contain the stinger in these animals?

The Cephalopod Page
You can find information about octopuses, squids, and nautiluses at this site. Click on Octopus dofleini to learn about the Giant Pacific Octopus.