The floor of a deep ocean strewn with the remains of a sunken fleet, hulls split open and masts broken, all tangled in the colossal skeleton of a sea leviathan wrapped in thick rusted chains. Pale glowing jellyfish drift through the ribs, and a single faint lantern still burns inside the wreck of a captain's cabin. Beams of dim teal light fall from the surface far above, with clouds of silt hanging in the water. Deep teal, black and tarnished bronze palette. Eldritch underwater battlefield illustration, vast scale, drifting particles, no characters, vertical composition.