The present study aims to detect the presence of intracellular Apicomplexa in two species of the genus Strombus: Strombus gallus and S. raninus. This parasitic interaction was initially described in S. gigas and extends to both other species of Strombidae studied. Such relationships could occur in the whole Strombidae family. Further investigations will focus on strombid species from other geographic areas to confirm this hypothesis. Complementary investigations are also scheduled to ascertain the nature of relationship between Apicomplexa and the family Strombidae.