Tetraclita stalactifera (Lamarck, 1818) "Ribbed Barnacle"

    These "Ribbed Barnacles" were photographed by Joel Wooster on granite boulders at Smyrna Dunes County Park south of Ponce Inlet, Volusia County, Florida on 7/1/2008. The barnacles are pictured with Siphonaria naufragum Stearns, 1872 American Striped Falselimpet.