na underwater building moving by tentacles like the arms of a brittle star, in the style of archigram's walking city. the building has the shape of a spiraling seashell, made of faceted triangulated glass and metal panels for a double skin facade with hydroponic, aeroponic, and aquaponic vertical farms. Triangular facade panels glow with bioluminescent organisms in neon colours. The building is supported by brittle-star mechanical legs/tentacles which extrude from the side and can also slowly move it to a new location underwater. Image shows underwater environment with sealife, warm turquoise color of the water and sun rays penetrating. Rendered in Unreal Engine Octane Render at 16k --version 6.0