drone view of a partially submerged wide modern public building crowded with travelers, an entrance to an underwater metropolis, a seaport designed to float in the middle of the the vast ocean. Sea foam and moderate waves outline the building. The structure features a combination of organic and straight lines and parallel skylights following the curvature of the structure. A large, panoramic underwater elevator seen descending into the depths of the sea guided vertically with bioluminescent algae forming concentric circles and pink vertical laser lights fading as it goes deeper. The port should be designed to accommodate millions of travelers daily, foggy bokeh background