The WhaleSafe project aims at preserving both sperm whales and boats from unwished collision in Santuario Pelagos, close to Savona (Italy). The system is made of 2 mother buoys, each one connected with its daughter through a data cable. The mother buoys provide power from the Sun and wind to their daughters who have 4 hydrophones and an acquisition system each, at about 80 m depth. The clicks emitted from the whales are analysed from a dedicated computer on any mother buoy and transmitted to a ground station for further analysis, through a wireless 3 g and 5 Ghz link.