Described as a three-hour marathon for aqua-fitness, the event spanned 73 countries and was designed to increase awareness of aqua aerobics.
It also came with a fundraising push, where those participating were sponsored for each half-hour block they completed.
Dunedin aqua aerobics instructor Sharon Teavae said raising awareness of aqua aerobics was a worthy goal. People often thought it was an easy form of exercise, but the extra resistance brought by being submerged meant it could be exhausting.
Yet being submerged also gave participants greater stability than they would have on land, making it a safer choice for many.
Ms Teavae said dozens of people took part in Saturday's event at the Physio Pool, and when it came to finding a recipient for the funds, organisers had not needed to look far.
The Physio Pool was still searching for funds to keep it open, and it was hoped this year's aquathon income would surpass the $2600 raised last year.
