Competition was held at the La Bocana and El Sunzal waves in Surf City, which has previously held the ISA World Stand-Up Paddle and Paddleboard Championships and the World Surfing Games.

Wong progressed through the first two rounds of the main competition in the girls' under-18 division, but a third-place finish to Japan's Kana Nakashio and Talia Swindal of the United States in the third round meant she had to go through the repechages to reach the final,

After progressing through six rounds of repechage, Wong placed second with a score of 14.40 points in her seventh to reach the final, alongside Spain's Lucia Machado who scored 14.67.

France's Hina-Maria Conradi and Zoe Benedetto of the US both reached the final through the main round of surfing,

Wong dominated the final, notching a huge forehand gouge en route to finishing with a score of 15.00 points.

Machado placed second with 11.07 points, and Conradi third with 8.50.

In the boys' under-18 event, Swanson progressed through heats in the first four main rounds, before a third-place finish in the penultimate fifth sent him into the repechages.

A first and second-place finish in the repechage round sent him into a heat for a place in the final with South Africa's Luke Thompson, England's Samuel Hearn and Australia's Jarvis Earle.

Swanson came out on top with 14.70 points, with Thompson joining Hawaii's Shion Crawford and Kobi Clements in the final after they progressed through the main round.

There was a Hawaiian one-two in the final, with Swanson's 14.73 points, helped by two backhand tail-high air reverses, followed by Crawford's 13.17.

The bronze medal went to Thompson with a 9.73 points effort, while Clements took copper with 5.70.

Hawaii also medalled in the boys' under-16 event, but it was Australia's Willis Droomer who proved too strong in the final.

Droomer scored 15.50 points in the final, with second-placed Inigo Madina tallying 12.24.

Luke Tema of Hawaii was only 0.01 points further back in third, with Hans Odriozola notching 11.50.

Canada's Erin Brooks underlined her domination of the girls' under-16 division by taking gold in the final.

Brooks reached the sixth round of repechages at under-18 level, but won all six of her main round heats in the main round at the lower age bracket.

She was impressive in the final too, scoring 16.77 points to claim victory.

American Bella Kenworthy was second with 14.74 points, while Japan's Mirai Ikeda took bronze with 10.77.

Hawaii topped the team standings, followed by Australia, the US and France.

ISA President Fernando Aguerre declared the competition "the best World Junior Surfing Championships in history", and "a huge success in uniting the junior surfers of the world in peace".

The Surf City resort is due to host its maiden World Surf League Championship Tour event from Sunday (June 12) until June 20.