Since March 9, Carolina Petti, a graduate in Biology from the Universidad Nacional de La Plata, and Micaela Müller Baigorria, a Marine Biology student from the Universidad Nacional del Comahue in San Antonio Oeste, have been doing a research internship at the EFPU under the direction of M.Sc. Ricarda Blum. Carolina and Micaela are analyzing material collected in a series of samplings aimed at studying the population dynamics of the amphipod Ampithoe valida in the Patagonian intertidal.