Polynias are gaps in the insulating sea ice cover and of great importance for the energy exchange between ocean and atmosphere in the Polar Regions. Our recent project deals with the observation of polynias using a combination of different sensors. The project has two goals: (1) to gain deeper insights in the evolution of polynia events and (2) to study the potential of the future Sentinel satellite missions. In this paper we briefly describe our studies on sea ice motion in and around the Ronne Polynia, Anarctica and present some first outcomes concerning the combination of multiple sensors for the observation of polynia events and validation of a simple polynia model.