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California & Mexico
The concentration of endemic species and subspecies in this region is greater than that in the Galapagos Archipelago

This very diverse region has nearly 300 islands. It subdivides naturally into three insular ecoregions: the California Current (Farallon Islands, Channel Islands and Pacific Baja California); Gulf of California; and, the tropical Mexican Pacific (Revillagigedo Islands and Marías Islands). In addition to the numbers and concentration of endemics species and subspecies, the area has a large diversity and number of breeding seabirds and pinnipeds and several significant sea turtle nesting areas.

Overall, the islands support over 220 endemic vertebrates and more than 150 endemic plants. They also host reproductive colonies for 37 seabird species, 2 sea turtles, and 4 pinnipeds. Surrounding waters are biologically rich and productive, and represent critical spots for several fisheries. This region contains what many believe are the world’s most ecologically intact low-latitude archipelagos.

All of Mexico's islands and most of California's islands are federal land. The main threats to these islands are invasive species and damaging activities by poorly regulated fisheries and other users. The tasks include definition of island conservation priorities, conducting invasive species removal projects, environmental education, building awareness, scientific research, continuous monitoring, and developing local capacities to implement projects within the region.

Restoring balance on Anacapa Island

See how the strength of community resulted in the amazing recovery of
Isla Natividad


Explore the dramatic restoration of Guadalupe Island


Protecting the extraordinary species of San Pedro Mártir 


Native species, including the Critically Endangered Island Fox, reclaim their home on San Nicolas Island

Laysan Albatross chick

Featured Island
Millions of seabirds depend on the protected habitat of Palmyra Atoll for survival. Learn more about how you are helping ensure their continued existence.

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