In this second progress report we present briefly again the context of the project POREMO funded by EU France (FEAMP Mesure 77, Data Collection Framework) for the development of appropriate IOTC conservation measures for both targeted and non-targeted large pelagic resources exploited by open ocean fisheries. The POREMO project specifically aims to quantify the post release mortality of the oceanic whitetip shark caught as a bycatch in the EU tuna purse seine and pelagic longline fisheries in order to assess the retention ban measure taken as conservation and management measure (CMM) for this species as specified in the IOTC resolution 13/06. In this working paper we present activities done since the last WPEB-14 (2018) regarding in particular the deployment of both miniPATs and sPATs as well as some results on the survival of sharks after release reported by tags.