Belgians Florence Lutje Spelberg and Nicolas Mouchart dive next to "The Pearl", a spheric dining room placed 5 metres underwater in the NEMO33 diving center, one of the world's deepest pools (33 metre/36 yards) built to train professional divers, before enjoying a meal inside, in Brussels, Belgium January 30, 2017. Picture taken January 30, 2017 REUTERS/Yves Herman