Cnidaria is a broad phylum of 11,000 different species from jellyfish to coral. Most Cnidarians are marine species with a few freshwater examples. A lesson presentation explains the important characteristics of different species of...

In this marine science worksheet, learners complete a crossword puzzle with 32 questions on sponges and cnidarian. They identify the different characteristics of sponges and cnidarian.

In this simple animals worksheet, students read information about sponges, cnidarians, flatworms, and roundworms and then complete a chart comparing and contrasting these groups of animals. This worksheet has 11 fill in the blank questions.

In this invertebrates worksheet, learners read about the characteristics of the different groups of invertebrates. Then students complete 10 multiple choice questions.

TThis site from the University of Arizona has a discussion of Cnidaria and their reproductive cycles and capabilities.