The Sonoran Desert has the highest biodiversity among the world's deserts.

The Sonoran Desert stands out for its exceptional biodiversity, supporting a rich variety of plant and animal species despite its harsh environment. This desert boasts a wide range of ecosystems, from cactus forests to riparian zones, which provide diverse habitats for many species. It is home to iconic species like the saguaro cactus, desert tortoise, and the Gila monster, along with countless birds, mammals, and insects. The unique climate, rainfall patterns, and elevation create a perfect environment for desert flora and fauna, making it one of the most biologically diverse deserts on Earth.