I was thinking the same thing, Kyle. I just could find no mention of any known shipwrecks off the shore of Yerba Buena Island, With the exception of the attached map, from 1859. There are references to William “Barnacle Bill” Bernard going treasure-hunting on Yerba Buena Island after hearing rumors of buried treasure from a Spanish galleon that crashed on its shores. There is no mention of any shipwrecks near Yerba Buena Island on any of the San Francisco shipwreck maps that I could find, either.Hmmm. It looks like pretty shallow waters. I’d be surprised if no one in the area already knew about it. Good find!