Hydra in the Fog of Victorian London

Photorealistic render of a colossal hydra with seven serpentine necks and snarling heads, emerald-black iridescent scales, fangs bared, and tongues flicking, towering over a fog-drenched Victorian London street. Gas lamps spill warm amber light onto wet cobblestones; horse-drawn carriages and pedestrians in 1890s attire recoil in fear. The hydra's necks coil around a wrought-iron lamppost and brush against brick townhouses; steam from chimneys and river mist mingle with smoky soot. In the background, the faint silhouette of Big Ben and church spires looms under a moody, overcast sky. The scene emphasizes photorealistic textures: damp leather, brass buckles, lace and wool, scale patterns, rain droplets, and dramatic chiaroscuro lighting with a hint of steampunk influence (brass gears, leather straps).