In the beginning of last November we reported the death of the young shag Ari, the pioneer of telemetry research in the project SIMARINE-NATURA. The shag has died soon after it had been equipped with a GPS logger. Its body was found one day after its death (15th October 2012) in the dock of the Shipyard Izola. It was conspicuously undernourished. In order to find out the primary cause of the shag’s death we submitted the corpse to the autopsy at the Veterinary faculty of the Ljubljana University.