"Ocean runners"

 

Ashy Storm-Petrel (Oceanodroma homochroa), above, and two Fork-tailed Storm-Petrels (Oceanodroma furcata), below

Photographed at Bodega Canyon, ~18 miles offshore, 14 August 2016

P.S.  Their genus, Oceanodroma, means "ocean runner," likely for the way they can appear to be running on water (flying low and sometimes pattering their feet on the surface of the ocean).