.Sanderson reminds us of the hard yet oft-forgotten fact of UFOlogy, which is, most UFOs seem inextricably connected with water - They are very frequently seen entering and leaving water, moving through or above water, and otherwise interacting with water. Sanderson explores all the implications of this, leading him to postulate that most UFOs are actually USOs - Unidentified Submerged Objects, and their pilots, these other intelligences (OINTS), may have evolved alongside of humanity but under the sea.