The project SocioCoast aims to contribute to better quality coasts and to the promotion of beaches via the use of crowdsourcing and big-data technologies. SocioCoast further aims to develop IT tools and to collect complementary information that can enhance the Blue Flag information system, the most well-known and reliable system for beach quality evaluation applied in more than 50 countries and awarded under strict criteria to organized beaches and marinas. Data and information will be collected during the project for selected beaches in Crete and Cyprus and offered to the public regarding: a) biodiversity, and more specifically information on marine species interesting for divers, dangerous species or alien species, and b) oceanographic and meteorological data for leisure activities (e.g. nautical sports, nautical tourism, leisure fishing). The selected locations will be preferably part of the Natura 2000 network and at the same time they will need to satisfy some other criteria (e.g. accessibility for people with disabilities). The ICT tools that will be developed during the project will offer updated and enriched information for the visitors and will also offer them the opportunity to interactively contribute to the updating of such information through crowd-sourcing (e.g. tourists will be able to submit information about pollution events, appearance of new species and status of touristic facilities). Finally, the opportunity for big data analysis and the enrichment of the platform with new applications will be offered through the project activities.