Terrestrial Italy is in the Palearctic realm Ecoregions are listed by biome.
Temperate coniferous forests Alps conifer and mixed forests
Temperate broadleaf and mixed forests Po Basin mixed forests Apennine deciduous montane forests Dinaric Mountains mixed forests
Mediterranean forests, woodlands, and shrub Italian sclerophyllous and semi-deciduous forests South Apennine mixed montane forests Tyrrhenian-Adriatic sclerophyllous and mixed forests Northeastern Spain and Southern France Mediterranean forests Illyrian deciduous forests
Freshwater Temperate coastal rivers Gulf of Venice Drainages Italian Peninsula & Islands
Marine Italy's territorial waters are in the Temperate Northern Atlantic marine realm, and Mediterranean Sea marine province. Adriatic Sea Ionian Sea Western Mediterranean