The top eight men's and women's national teams have landed in Sydney and are poised to go head-to-head for the coveted World Aquatics Water Polo World Cup Finals trophies.
It is a stacked field featuring medallists from the Olympic Games and World Aquatics Championships, meaning every match-up in the pool carries real weight.
The finest margins could decide every match, with a goal or two the difference between teams keeping their hopes alive and losing out.
Who will follow in the footsteps of Spain's men and Greece's women, who triumphed in the World Cup Finals last year?
Have your say below.