This comprehensive photo flashcard set contains a total of 58 invertebrates flashcards as follows:Arthropods (Crustaceans): Barnacles, Lobster, Shrimp, Hermit Crab, Crab, Crayfish, Blue Crab, and a Horseshoe CrabArthropods (Insects): Beetle, Moth, Fly, Bee, Butterfly, Grasshopper, Dragonfly, and an AntArthropods (Arachnids): Scorpion, Tarantula, Brown Recluse, Zebra Jumping Spider, Black Widow, Web Builder, Spinning Spider, Water SpiderArthropods (Myriapods): A Millipede and CentipedeEchinoderms