The Californias region, which comprises California and the Baja California Peninsula, includes many coastal islands in the Pacific Ocean. California is in the United States; and the Baja California Peninsula includes the Mexican states of Baja California Sur and Baja California. Although the waters and islands are in two countries, many of the ecoregion, habitat, conservation, and ecological issues are shared.
The Channel Islands of California, United States:
The Pacific Coast islands of the Baja California Peninsula, Mexico:
Islands of the Gulf of California: