This research axis aims to better understand the structuring and functioning of marine organisms, from the individual to the population processes.

The problematic requires knowledge of species, from micro- (bacteria, microalgae...) to macro-organisms (benthic or pelagic, fish, marine mammals, marine birds), of their evolutionary history, their life history traits, their behaviors and the dynamics of their populations.

Two main fields of research are developed, one concerns the characterization and distribution of tropical marine organisms and the second concerns population biology and the study of evolutionary and adaptive processes at the individual and population levels.

The approaches used to address these issues are usually integrative and include morphological, genetic, molecular, functional, telemetric, geographic and computational analyses.