The dataset contains more than 12200 occurrence data from marine sites along the Italian Coast. Data refer to alien species and native species distributed within 91 sites and 7EUNIS habitats (level 2) all around Italy.

The dataset contains more than 3800 occurrence data divided among 9 Eunis species groups (Algae, Amphibian, Birds, Cyanobacteria, Fishes, Flowering Plants, Invertebrates, Protists, Reptiles). Data refer to alien species and native species distributed within 23 sites and 4 Eunis habitats (level 2) all around Italy.