Phylums and Classes of the Animal Kingdom

http://www.stlzoo.org//visit/thingstoeeanddo/stingraysatcaribbeancove/horseshoecrabfacts/

http://kids.britannica.com/comptons/article-20481/mollusk

http://en.m.wikipedia.org/wiki/Giant clam

http://en.m.wikipedia.org/wiki/Echinoderm

http://marinelife.about.com/od/invertabrates/tp/segmented-worms.htlm

http://mentalfloss.com/article/63130/11-awesome-axolotl-facts

http://en.m.wikipedia.org/wiki/Mexican mole lizard

http://en.m.wikipedia.org/wiki/Guianan cock-of-the-rock

http://animals.nationalgeographic.com/animals/mamals/leopard-seal

http://www.earthlife.net/inverts/porifera.html

http://species-identification.org/species.php?species_group=caribbean_diving_guide&id=451

                                                                              

http://immortal-jellyfish.com/immortal-jellyfish-facts/

http://immortal-jellyfish.com/

http://www.ucmp.berkeley.edu/platyhelminthes/platyhelminthes.html

https://sites.google.com/site/roundworms69/interesting-facts-about-roundworms

http://ic.steadyhealth.com/about-roundworm-facts

http://www.nhs.uk/conditions/roundworm/Pages/Introduction.aspx

http://www.ucmp.berkeley.edu/arthropoda/arthropoda.html

http://mentalfloss.com/article/68286/10-hard-shelled-facts-about-horseshoe-crabs

http://www.factzoo.com/invertebrates/giant-clam-not-a-man-eater.html

http://www.aquariumcreationsonline.net/starfish.html

http://quatr.us/biology/animals/segmentedworms/

http://poster.4teachers.org/view/poster.php?poster_id=379778

http://aquariumfish.net/catalog_pages/cichlids_neotropical/oscar_fish_for_sale.htm

http://animalia-life.com/birds/guianan-cock-of-the-rock.html

http://www.realmonstrosities.com/2011/07/mexican-mole-lizard.html

http://logosworld.info/leopard-seal/

http://boards.straightdope.com/sdmb/showthread.php?t=728575