The purpose of the paper is to report mainly the work developed in the areas of distributed instrumentation and geographic information systems for dolphins' environment assessment. A smart sensing node mounted in a buoy expressed by eater quality transducers, a low cost hydrophone materialize ans a GPS deliver the informations for an acquisition and wireless communication module that is connected through Wi-Fi to a laptop PC that is installed in a ship. Using the internet available connection (3G/UMTS modern is installed on the laptop PC) the data from different sensing nodes are transmitted to a host PC where specific software implemented materializing the geographic information system dor dolphin life assessment (GIS). Thus, on-line environment assessment through dynamic web pages is carried out.