A container ship was barely visible as it began to emerge from the fog inbound into San Francisco Bay.

A fishing boat returning to port after a morning of ocean fishing. The bay was shrouded in its usual summer fog.

Fort Point barely visible under an almost invisible Golden Gate Bridge.

The Golden Gate Bridge as seen from below in the fog with Fort Point just a smudge at its base. (This is what it looks like in sunshine )

The roadway of the Golden Gate Bridge as seen from below in the fog.

A channel marker buoy just outside the Golden Gate Bridge on a foggy afternoon.

Hundreds of sea birds flew across the water just outside the Golden Gate Bridge.

The fog was just beginning to burn off as the boat returned to the bay. Here was the base of the Golden Gate Bridge more visible than on the trip out.

The island of Alcatraz was barely hidden in a fog bank as the fog began to burn off the bay.

Angel Island barely cleared the fog that afternoon. Only its very topmost peak was visible above the fog bank.