Gray, speckled, translucent gelatinous blob cut in half to show structure

    Bryozoans (Moss Animals)

    Freshwater species in the phylum Bryozoa
    elktoe

    Elktoe

    Alasmidonta marginata
    fragile papershell

    Fragile Papershell

    Leptodea fragilis
    Monkey Face Mussel

    Freshwater Mussels

    Bivalve molluscs in order Unionoida
    giant floater

    Giant Floater

    Pygandon grandis
    mucket

    Mucket

    Actinonaias ligamentina
    pink heelsplitter

    Pink Heelsplitter

    Potamilus alatus
    plain pocketbook

    Plain Pocketbook

    Lampsilis cardium
    round pigtoe

    Round Pigtoe

    Pleurobema sintoxia
    spike

    Spike (Ladyfinger)

    Elliptio dilatata
    Photo of a pink planarian on a rock.

    Turbellarians (Planarians; Free-Living Flatworms)

    Species in genera Dugesia, Planaria, etc.
    wabash pigtoe

    Wabash Pigtoe

    Fusconaia flava