ultra-detailed engraving line art, black and white vector illustration, seamless wrap design, crosshatching, stippling, high contrast, no color, no shading, no gradients, clean negative space, suitable for laser engraving on metal tumblers, baroque etching style, centered composition, symmetrical flow, fine line engraving, consistent density skull fused with coral reefs, jellyfish, and octopus tentacles, ocean abyss theme, bubbles and seaweed floating upward, horror nautical engraving style