This is a crossword puzzle for high school biology that reviews the different phyla of animal life. It was developed by Ross Edwards a high school biology teacher for use in biology classes. It would be useful at the end of a unit or lesson on animals. It would also be useful at the end of a school year or semester. It would both fill unused time and help reinforce the subject matter. The crossword puzzle covers the following phyla: porifera, cnidaria, platyhelminthes, nematoda, annelida, mollusca, arthropoda, echinodermata, and chordata.