El Golfo Biosphere Reserve, MEX. / Sun setting behind the mountains of Baja, tidal pools form beneath the cliffs of Sonora, Mexico's Upper Gulf & Colorado Delta Biosphere Preserve. 82000H14
El Golfo Biosphere Reserve, MEX. / Sand patterns and shell studded rock beneath the cliffs of Sonora, Mexico's Upper Gulf & Colorado Delta Biosphere Preserve. 82000V3
El Golfo Biosphere Reserve, MEX. / Fossilized sand dollars beneath the cliffs of Sonora, Mexico's Upper Gulf & Colorado Delta Biosphere Preserve. 82000V7
