San Diego: America's Wildest City

Experience San Diego’s dazzling biodiversity.

Despite its 3.3 million human residents and urbanization, San Diego is America’s most biologically diverse county and a land born of extremes: the mighty Pacific to its West and the Sonoran Desert to the East.

From roadrunners to hummingbirds, and from orcas to dolphins, witness nature's resilience and beauty amidst the city sprawl. From Nature.