Martin Duggan caught this San Francisco alligator lizard in Glen canyon on Tuesday sunning itself on a rock. The lizard is officially called Elgaria coerulea coerulea.
They range from 2.75 to 5.87 inches in length from snout to vent. The subspecies lives in to California from northern Sonoma County, south along the coast to northern Monterey County. They are also found on islands in San Francisco Bay and Ano Nuevo Island.
You can read more about them here.