Aquariums in the greater Tokyo area are offering new attractions and features to expand the scope of visitors beyond just families with children, with two aiming to provide a dating site for young couples and another a healing spot for adults

Enoshima Aquarium in Fujisawa, Kanagawa Prefecture, extended its hours of operation to 8 p.m. from 5 p.m. to accommodate a show dubbed "Night Wonder Aquarium 2016" for a limited period from mid-July until Dec. 25.

During the show, visitors watch projection-mapping that includes a moonlit shimmering sea in a large high-ceilinged tank while listening to music and other sounds.