On the rocks, mixed with mussels, toward the lower end of the intertidal zone.
Some live barnacles, some dead.
Is this a non-native barnacle species to Northern California? Thousands of them were growing on a boat that was to shore in Daly city. The book the boat is believed to be from Japan.
with Marine Iguanas
Tip of right fluke.
Could this be a barnacle molt? It was clear, the main part about 2" long, just a floating blob but pretty! This photo taken with a macro lens shows some beautiful detail, like little spirals.