Under such a silent, fathomless sky! So awful in its mightiness, that lake, / So fathomless, that clear and salty deep. Their forthcoming album, "Fathomless", will be self-released. Bloodbath released their third full-length album, "The Fathomless Mastery", in October 2008. The Fathomless Mastery is the third full-length album by Swedish death metal band Bloodbath. "Fathomless" is the third book in the fairy tale-inspired series by Jackson Pearce.