Comparative bioaccumulation kinetics of trace elements in Mediterranean marine sponges

► We study element bioaccumulation in six sponge species as potential biomonitor. ► We examine uptake and loss kinetics of eight metal and radionuclide. ► Massive species accumulate the most efficiently metals. ► One species displayed remarkable Ag uptake and retention properties. ► Results contribute to select sponge species as valuable tool for environment monitoring.