Operational oceanography provides forecasts or near real time information of ocean conditions. This information can be used to assist in fishing, oceanic oil rig position or navigation so that these entities are prepared for poor or dangerous conditions and can take appropriate action. Sea level measured from Jason-3 is important for these forecasts as it provides information on what the current ocean conditions are and also the wave height. [Credit: CNES (Centre National d'Etudes Spatiales) and Mira Productions].