XtremeVet will explore the use of selected halophyte plants (HP) as sources of innovative products for veterinary use, focusing on gastro intestinal nematodes (GINs). The Portuguese partner [MarBiotech, Centre of Marine Sciences (MB/CCMAR)] will provide samples to be tested (biomass/extracts) from selected HP with ethnoveterinary uses and rich in polyphenolics, and evaluate them for nutritional properties and bioactivities relevant to improve animal health. The French partner [Host-Pathogen Agents Interactions Unit, French National Institute of Agronomic Research (HPAI/INRA)] will evaluate the in vitro antiparasitic of the extracts against GINs. XtremeVet will complement knowledge gathered during previous R&D projects, enable the MB group to widen its reasearch area to veterinary medicine, contribute to the exchange of knowledge/training of researchers, particularly young ones and strengthen the relationship between CCMAR and INRA aiming the preparation of future research applications.