Humedales de la Laguna La Cruz. 02/02/13; Hermosillo, Sonora; 6,665.146 ha; 111°52'52.65''W 28°47'14.76'' N. The importance of this Ramsar Site is based on its location, physical characteristics and on the large number of species it supports. This wetland is part of the Pacific Migratory Route and is an important rest area for migratory birds. The Site provides food and refuge to a total of 154 species of birds. 84 of these are aquatic bird species and of those, 9 have populations of over 1% of the total species population that live at this Ramsar Site. In terms of fish, 96 species have been identified at the Site which is also vital for some species during adverse climatic conditions and as a breeding area of various fish, mollusc and crustacean species. The Site is particularly important for species of the Gobiidae, Atherinidae, Gerreidae and the Engraulidae families during their larval and juvenile stages. The Site is characterized by its mangrove forests, which are unique as they are located within the northern limit of their distribution, lack fresh water inputs and are within the Sonorean Desert area. As a result, species such as the Frankenia spp., which are adapted to the very saline conditions, are found at the Site. This Ramsar Site also supports threatened species such as the marine turtle Chelonia mydas and the elegant tern Sterna elegans among others. Furthermore, the Site is highly significant for the local communities as it maintains the fisheries of the area. It is also an important area for tourism and research. The main threats to the Site are related to the shrimp farms located in the outskirts of the Site and their effluents. Ramsar Site No. 2154