The main life history characteristics, ecology and fishing interest of bivalve and gastropod species from the Argentine Sea are described. Exploited bivalve species are: mussel Mytilus edulis platensis, cholga Aulacomya ater, tehuelche scallop Aequipecten tehuelchus, Patagonian scallop Zygochlamys patagonica. Bivalve species irregularly exploited are: yellow clam Mesodesma mactroides, purple clam Amiantis purpurata, hard shell clam Ameghinomya antiqua and wedge shell Donax hanleyanus. It is also presented information on species of potential interest: clams Eurhomalea exhalbida and Pitar rostratus, half naked pen shell Atrina seminuda, 'geoduck' Panopea abbreviata, razor shells Solen tehuelchus, Ensis macha, Tagelus plebeius, and flat oyster Ostrea puelchana. Gastropods considered are: volutids Adelomelon (Pachycymbiola) brasiliana, Adelomelon (Pachycymbiola) ancilla, Adelomelon beckii, Zidona dufresnei and Odontocymbiola magellanica, small gastropods (families Nassariidae, Muricidae, Buccinidae and Olividae) and limpets and keyhole limpets (families Patellidae and Fissurellidae). Lasta, M.L.; Ciocco, N.F.; Bremec, C.; Roux, A. 1998. Moluscos bivalvos y gasteropodos. En: Boschi, E.E.; ed. Los moluscos de interés pesquero. Cultivos y estrategias reproductivas de bivalvos y equinoideos. Mar del Plata: Instituto Nacional de Investigación y Desarrollo Pesquero INIDEP, (El Mar Argentino y sus recursos pesqueros, 2) p.115-142. Published Mollusca, bivalvia, gastropoda, Mytilus edulis platensis, Aulocomya ater, Aequipecten tehuelchus, Zygochlamys patagonica, Mesodesma mactroides, Amiantis purpurata, Ameghinomya antiqua, Donax hanleyanus, mejillón, berberecho, cholga, navaja, navajuela, ostra, caracol, distribución geográfica, ecología, historia de vida, revisión bibliográfica, recursos potenciales, moluscos marinos