Shortly after passing under the Golden Gate Bridge, our boat encountered up to 20 harbor porpoises. On our way to the Farallones, we came upon short-finned pilot whales, and right after that whale watchers were able to have great observations of 20 Risso's dolphins and 15 Pacific white-sided dolphins. Six miles south of the Farallones, we encountered three humpback whales that were apparently deep-dive feeding as they rose to the surface, replenished their air, then dived for longer periods of time. At the Farallones, we sighted a mother gray whale with her calf.