The 15 Scottish sea areas are based on areas previously adopted for certain environmental monitoring programmes. The data from these 15 areas can be presented regionally and also reasonably aggregated to form a national picture and to develop information for the two main areas required for the Marine Strategy Framework Directive initial assessment: the Greater North Sea (Area II) and the Celtic Seas (Area III) which are existing sea areas used by OSPAR (the Oslo Paris Convention for the Protection of the North East Atlantic)