Pacific Gyre designs and manufactures drifting buoys and marker buoys in order to track currents and collect remote, environmental data. These calibrated drifters include GPS receivers and satellite telemetry systems allowing users to track and monitor the drifters remotely in near real-time. Available sensors include: Sea surface temperature Air pressure Wind velocity Water temperature profiles Sea surface salinity Customers include research institutions, governmental agencies and municipalities wishing to collect physical data about the open-ocean, coastal waters, lakes, rivers, and estuaries. Pacific Gyre manufactures a suite of standard products, and also works with customers to innovate new designs. See our website for various capabilities...www.pacificgyre.com