Could an Aquarium be a hot date spot?

I always wondered why the zoo is among some of the hottest date spots in Japan. Now I know why. Well, in this case, it's the aquarium. Btw, this is not what we Japanese call a purikura. Those are REAL gellyfish in a real tank. I know it seems a bit unreal, like we're IN the tank, but actually we're just standing behind it. Cool huh!