In total some 42 regional school and club teams took part in the event which featured over 400 young swimmers, with the races being spit into various age and gender categories.
Young swimmers leap off the blocks at the start of a race.
One of the best races of the opening day came in the 12yr male youth category where Kingpai Anglim from the Preechanusat School, Chonburi just edged ahead of Pitchyam Khlaikhum (Dhammasiri School) and Kongkiet Srihaakhum (Maryvit School) to take the gold medal for his team.
Awards and medals were handed out to the winners by Pattaya Mayor Itthipol Kunplume, however the event was more about taking part than gaining the gold and all the swimmers seemed to enjoy a great time.
Pattaya Mayor Itthipol Kunplume awards medals to the champions in the 12yr male category.