Don't ask me why but for some reason Minnie and Candy where tied on heavy dump-bells on the bottom of the pool. Maybe some bad boy them and tied them or - that is what I can imagine - they started a stupid game sharing the smallest air tank that we have (0,8 litres) just waiting until it runs out of air. Maybe they did not imagine how heavy the two dump-bells are or they did not manage to unbind themselves in time. The end became a disaster...