The sport is definitely physical - at Baywave during weekly training the Aquaferns have suffered a concussion and three black eyes over recent months.
Swimmers involved work harder than any other athletes, according to a US Olympic Committee finding.
Head coach Diaz is confident all the hard work of training for 35 hours a week in Tauranga, Hamilton and Invercargill will pay off with qualification for the Olympics.
"We are working really well together. I think on the day if the team puts all their passion together we can achieve our goal," she said.
The Aqua Ferns receive no national funding so finding $25,000 per athlete to compete in Europe has been a massive challenge.
Diaz, who came to Tauranga from Argentina in 2011, says they have to earn the right to be funded first.
"It is part of the reality of being an up-and-coming sport in New Zealand. You have to first show the results before you can get the money, which is fair enough. Luckily we have a group of parents who are really dedicated to the sport and are really supportive to helping fund the team along with some sponsors."
Assistant coach Ribeiro is from Brazil and says the sport has a strong following in the Western Bay.
"Everyone can see the effort that the girls are putting in here at Baywave with two sessions every day," she said.
"The sport is growing and getting more respect from everybody but it still needs a lot more. Some people don't understand how it works and they think it is like ballet in the water but it is much more than that."