Herring run in the sf bay. The only time one sees them is as they are being plucked out by gulls or men. Shoreline areas between piers at least either side of the bay bridge have their fill of both gulls and boats. With sea lions plying the waters as well, though not in great numbers.
A very nice spawning event is going on off the seawall here. The herring run attracts a lot of attention from various species.
This one was washed up on shore and being tended to by some hungry crabs.