In 2017, several European flat oysters (Ostrea edulis<\/em>) were (re)discovered in the Wadden Sea, potentially indicating the early stages of a recovering population. However, the likelihood of natural expansion throughout the Wadden Sea and the timeframe for such a process remain unclear. To explore the potential for facilitating the spread of flat oysters, we conducted a practical study on behalf of the Programma Rijke Waddenzee (PRW)<\/strong> in collaboration with De Goede Vissers<\/strong> from Lauwersoog.<\/p>\n\n\n\n The objective of this pilot study was to gain insights into how factors such as water depth, exposure duration, and location influence the survival and growth of flat oysters. To investigate this, locally cultivated oysters were temporarily reintroduced at four different sites in the eastern Wadden Sea under varying conditions.<\/p>\n\n\n\n The results showed that flat oyster survival and growth in the eastern Wadden Sea is possible, even in conditions initially thought to be unsuitable. This study has provided valuable knowledge and experience that will be essential for potential follow-up actions to support further expansion of the flat oyster population.<\/p>\n\n\n\nSurvival After Reintroduction: A Field Study<\/h3>\n\n\n\n