979-3693 - Aerial view of Isla San Esteban (foreground) and Isla Tiburon - the largest island in the Gulf of California (Sea of Cortez), Sonora, Mexico taken from a commercial flight.
979-5637 - San Esteban spiny-tailed iguana (Ctenosaura conspicuosa), an endemic iguana found only on Isla San Esteban in the Gulf of California (Sea of Cortez), Mexico
979-1946 - Yellow-footed Gull (Larus livens) on nest on Isla San Esteban in the Gulf of California (Sea of Cortez), Mexico. This species is enedemic to the Gulf of California.
979-8337 - San Esteban spiny-tailed iguana (Ctenosaura conspicuosa), an endemic iguana found only on Isla San Esteban in the Gulf of California (Sea of Cortez), Mexico
979-3187 - San Esteban spiny-tailed iguana (Ctenosaura conspicuosa), an endemic iguana found only on Isla San Esteban in the Gulf of California (Sea of Cortez), Mexico
979-171 - False-killer whale (Pseudorca crassidens) surfacing off Isla San Esteban in the midriff region of the Gulf of California (Sea of Cortez), Mexico
979-820 - Adult fin whale (Balaenoptera physalus) surfacing in the calm waters off Isla San Esteban in the midriff region of the Gulf of California (Sea of Cortez), Baja California, Mexico
979-813 - Adult fin whale (Balaenoptera physalus) surfacing in the calm waters off Isla San Esteban, Gulf of California (Sea of Cortez), Baja California, Mexico
979-3188 - San Esteban spiny-tailed iguana (Ctenosaura conspicuosa), an endemic iguana found only on Isla San Esteban in the Gulf of California (Sea of Cortez), Mexico
979-3189 - San Esteban spiny-tailed iguana (Ctenosaura conspicuosa), an endemic iguana found only on Isla San Esteban in the Gulf of California (Sea of Cortez), Mexico
979-173 - False-killer whale (Pseudorca crassidens) surfacing near Zodiac off Isla San Esteban in the midriff region of the Gulf of California (Sea of Cortez), Mexico