Anyone who has ever visited San Francisco’s Fisherman’s Wharf has probably hung out with the sea lions of Pier 39, who first appeared after the 1989 earthquake. You should have heard by now about their recent mysterious mass departure, which had left some speculating that they had some sixth sense about an impending disaster such as another major quake. Now, it appears, it has been determined that there is a simpler explanation. In this El Nino season, they have simply gone after their shifting food source. (SFist) This is not to say, it seems to me, that they are not canaries in a coalmine with respect to a different sort of impending disaster, climate change.