Use these websites to collect information for your PowerPoint Presentation:
http://kids.nationalgeographic.com/Animals/CreatureFeature
http://nationalzoo.si.edu/Animals/OceanLiving/Facts/default.cfm
http://a-z-animals.com/animals/sea-urchin/
http://library.thinkquest.org/J001418/urchin.html
http://www.marineparks.wa.gov.au/fun-facts/sea-urchins.html
http://www.aquaticcommunity.com/sw/seastarfacts.php
http://library.thinkquest.org/J001418/star.html
http://marinelife.about.com/od/invertebrates/tp/seastarfacts.htm
http://www.kidskonnect.com/subject-index/13-animals/24-crabs.html
http://animals.nationalgeographic.com/animals/invertebrates/blue-crab/
http://kids.yahoo.com/directory/Science-and-Nature/Living-Things/Animals/Invertebrates/Arthropods/Crustaceans/Crabs
