large group of animals, pedestrian walkway, no people, horizontal, indoors, photography, fish, animal, color image, exhibition, water, aquarium, underwater, swimming, spain, shark, railing, front, day, people, building, harbor, port, located, catalonia, barcelona, show, elasmobranch, sport, enclosure, twenty-four hours, district, entertainment, edifice, seaport, european country, presentation, city, direction, barrier, vivarium, urban area, rail, diversion, cartilaginous fish, tank, inside, aquatic vertebrate, water sport, submerged