Project flyer

A flyer presenting the aim of the project was designed. It can be freely downloaded here.

Tests of PARADEP 3.2

Based on the previous device trials (PARADEP 3.1) which took place in December 2020, the requested changes were applied to the case. As a result, a new design for the carabiner was tested: it is now a circular snap hook, instead of the previous rectangular one. However, the general design of the case has not
            The third version of the device was tested in July 2020. It was conceived based on the observations raised during the previous experiments. This version is intended to be the final one that will be tested in real fishing conditions on pelagic longline vessels in Reunion Island.  This version
            03/10/2020: The PARADEP project was presented at the Lycée de la Mer, Sète.   Auriane and Njaratiana presented some results about depredation impacts in the Indian Ocean, how fishermen cope with that issue and what is currently done to mitigate it. The presentation mainly focused on the PARADEP actions.
The second depredation mitigation device trials were carried out on February 25 and 26, 2020. Those new prototypes include some of the changes identified at the end of the previous trials. Among those modifications, monofilament gill net and ramie were used instead of the linen fabric, the mobile part and the triggering system were improved,
PARADEP was presented at the World Marine Mammal Conference held in Barcelona in December 2019 ( This year, this symposium was jointly organized by the Society of Marine Mammalogy and the European Cetacean Society. This international conference aims at bringing together scientists, students, policy-makers and managers whose work focus on marine mammal science and conservation.
            The first depredation mitigation device trials were carried out off Sète, south of France, on August 02 and 07, 2019. Researchers and engineers from IRD, IFREMER and SATIM were involved in those trials, which took place onboard an IFREMER research vessel. This survey aimed at assessing the behaviour of
            June 11 – 19, 2019: Marc SORIA, our acoustic engineer involved in the PARADEP project, undertook an acoustic survey onboard the Vetyver 6 during a commercial fishing campaign. That 16 m long commercial pelagic longliner belongs to the fishing company and project partner ENEZ DU. The goal of that
            13-14/06/2019 : Shooting of a documentary about the conception of the depredation mitigation device During a work meeting with the SATIM team (Niort, France) in charge of the device conception, Luc MARKIW (IRD Images) recorded the different steps of the prototype machining. He also interviewed some of the actors involved

Acoustic survey

06/10/2019: Preliminary acoustic survey onboard a commercial pelagic longliner Marc SORIA, acoustical engineer involved in the PARADEP project, will be onboard the Vétyver 6 (ENEZ DU fishing company) during a commercial fishing trip which will last 15 days. He will deploy several hydrophones, accelerometers and cameras along the longline, in order to record acoustic signals
4/8/2019 : Start of the internship of Sara BOUTAAM (MSc Mechanics of composite structures: aeronautics and eco-design, Paris Nanterre University). Title: Design of a toothed whale depredation mitigation device for pelagic longline fisheries: food for thought Internship content: Bibliography Design of the prototypes Field tests if possible Supervisors: N. Rabearisoa, P. Bach, P. Vidal (Energetics
Objective: Design of a physical depredation mitigation device This innovative device will have three protective skills: physical (barrier between the fish and the predator), visual (hiding of the fish) and passive acoustic (modification of the fish acoustic signature). Service provider: SATIM Exploitation (  

Quick-off meeting

Quick-off meeting with project partners: IRD (P. Bach, M. Soria, N. Rabearisoa) CEBC CNRS (C. Guinet) ENEZ DU (P. Guérin) Place: National Museum of Natural History (Paris)

PARADEP start date