The Danube delta is a wetland of primordial importance for wildlife and humans alike. The former resources trigger a specific form of leisure for the latter, namely ecotourism whose manifestation is featured in the current research paper through an analysis of the foreign and domestic arrivals as well as a succinct presentation of its fauna resources. This primitive location, its seclusion and its unique resources invite the tourist to authenticity, immersion and self discovery, in other words a responsible type of tourism. The total tourist arrivals for the Danube delta amounted to 88000 in 2012, thus indicating its remoteness from mass tourism.