This chapter describes the development of a map viewer (accessible in Spanish at http://www
.ideo-cabrera.ieo.es) for the Archipelago de Cabrera National Park, Balearic Islands, Spain. The
park is a region with various forms of protection, demonstrating the importance of this area and the
need to expand knowledge about it and facilitate the management and monitoring of a wide range of
environmental threats and hazards. The development of the map viewer (leveraging ArcGIS Viewer
for Flex software) is one of the pioneering initiatives in Spain relating GIS technology to the marine
environment. It is the result of extensive interinstitutional collaboration between the EU-US Marine
Biodiversity research group of the Instituto Franklin-Universidad de Alcalá, the Instituto Español
de Oceanografía, and the Organismo Autónomo de Parques Nacionales. Keywords for this chapter
include GIS, web mapping, map viewer, Visor, metadata, WMS, INSPIRE, ArcGIS, Geoportal, Cabrera,
parque nacional, national park, Islas Baleares, Balearic Islands, España, Spain.Postprin
