The service module offers a time window estimate in which spats are likely to arrive in your site from different source locations. Based on environmental condition service module detect spawning events, hence the module computes a spawning period and a delay between spawning and spat settlement to assess the period where spat could be collected. The service offers two different methods for calculating the likely arrival time of the spats. The method that can be used by the user is dependent on the data the user has about its farming site and species of interest. Pre-sets are also provided for the farming of mussels and oysters.

The service is currently available for the Southern-North Sea. After the service is run, an information bulletin is generated showing the potential spawning sites of the spats and its respective first- and last arrival times in the farm location. The service uses data from the Royal Belgian Institute of Natural Sciences (RBINS).