The maritime connections could reduce the distance between Cádiz and Faro by 156 km, and 105 km between Cádiz and Huelva, which could lead to a significant reduction in the emission of polluting gases. Espomar creates a Cooperation Network in R + D + i aimed at the Design of a Sustainable and Transboundary System of Maritime-Fluvial Transport in the Gulf of Cádiz, which helps to improve cross-border connectivity, natural resource management, conservation, protection , promotion and development of the natural and cultural heritage, contributing to the increase of the tourist offer, and therefore to the economic and sustainable growth of the zone of fluvial coastal maritime performance comprised between Cadiz and Faro.