Institut National des Sciences et Technologies de la Mer (INSTM) 1 article published in JoVE Environment Data Collection on Marine Litter Ingestion in Sea Turtles and Thresholds for Good Environmental Status Marco Matiddi1, Giuseppe A. deLucia2, Cecilia Silvestri1, Gaëlle Darmon3, Jesús Tomás4, Christopher K. Pham5, Andrea Camedda2, Frederic Vandeperre5,6, Françoise Claro7, Yakup Kaska8, Helen Kaberi9, Ohiana Revuelta4, Raffaella Piermarini1, Roberto Daffina1, Marco Pisapia1, Daniela Genta1, Doğan Sözbilen8, Mohamed N. Bradai10, Yasmina Rodríguez5, Delphine Gambaiani3, Catherine Tsangaris9, Olfa Chaieb10, Judicaëlle Moussier7, Ana L. Loza11, Claude Miaud3, INDICIT consortium, 1Italian National Institute for Environmental Protection and Research (ISPRA), 2Institute for Coastal Marine Environment-National Research Council (IAMC-CNR), 3EPHE, PSL Research University, UMR 5175 CE3FE, CNRS, UM, Univ P. Valery, SupAgro, IRD, INRA, Biogéographie et Écologie des Vertébrés, 4Cavanilles Institute of Biodiversity and Evolutionary Biology, University of Valencia, 5Departamento de Oceanografia e Pescas, Instituto do Mar/Okeanos, Universidade dos Açores, 6MARE - Marine and Environmental Sciences Centre, Universidade dos Açores, 7 The protocol focuses on the collection of sea turtle samples, describing all the steps from the animal recovery and necropsy to the classification and quantification of ingested marine litter. Moreover, the representative results show how to use the collected data to elaborate the possible thresholds for Good Environmental Status.