Urth: Umibozu

Off the coast of Nihon, strange tales revolve around a mysterious creature that walks along the waves.  Sailors tell stories of a massive giant that appears seemingly out of nowhere, aimlessly wandering, patrolling its domain for an unknown purpose.  Those who interact with it quickly find themselves deep in a watery grave, but its not a malevolent beast as the stories would say, as it only lashes out at those who draw its attention.  Then again, its hard to say what exactly catches its eye in the first place.  Whatever the case, the sea giant is best left alone, content to walk the ocean.