Just T. Bayle-Sempere currently works at the Departamento de Ciencias del Mar y Biologia Aplicada and Instituto Multidisciplinar para Estudio del Medio "Ramón Margalef", University of Alicante. Just does research in ecosystem dynamics and impacts on marine ecosystems. The research lines he has developed deal with the ecology of marine protected areas and artificial reefs, participating in design, creation, and monitoring projects, the analysis of anthropic impacts in key marine ecosystems, the environmental effects of open-sea aquaculture, and ecosystem modeling as a tool to assess the effects of ecological processes and anthropogenic activities. He has participated as a researcher in 60 research projects, 5 of them funded by the EU (2 of which as principal investigator). He has co-authored 95 publications, with 65 of them in international impact journals. He also works as a consultant for fishing organisations and NGOs.