It is the size of the area associated with the difficulty of making field recordings there, that makes the remote sensing in the Wadden Sea particularly interesting. The need for comprehensive monitoring data increased strongly in recent years due to demands by EU directives. But not only environmental data are of interest, the North Frisian Wadden Sea is one of the largest protected areas for archaeological sites. Since 2007 a rash of remote sensing projects step by step is leading to an operationalized use of remote sensing for a Wadden Sea monitoring. The inclusion of knowledge-based information, the close connection of field observation and remote sensing as well as the possibility of using high-resolution radar data was conducive to significant improvements, as is represented for macrophytes, sediments and mussel beds in this article.