Kseniia Bailo and Oleksii Sereda won the 10-metre mixed synchronised diving competition at the European Aquatics Championships despite having trained together for just a week.
That gold medal was one of two won by Ukraine on the second day of the event at Budapest's Duna Arena.
Sixteen-year-old Bailo and 15-year-old Sereda won a by a convincing margin, with their total of 325.68 points more than 18 ahead of the runners-up.
Britain's Andrea Spendolini-Sirieix - who at 17 was making a senior European debut - and Noah Williams won the silver medal with a total of 307.32.
Russia's Viktor Minibaev and Ekaterina Belyaeva, who had won a team gold medal 24 hours previous, took third place.
Italy dominated the women's 1m springboard final, with Elena Bertocchi winning gold and Chiara Pellacani placing third.
Bertocchi amassed a points total of 259.90, Pellacani got 254.15, and Swiss Michelle Heimberg scored 255.55 to split the pair and earn a silver medal.
Marta Fiedina won Ukraine's other title in artistic swimming's solo technical discipline - an event devoid of a Russian entry.
Fiedina scored 91.8445 to hold off Greece's Evangelia Platanioti, who came second on 89.2897.
Belarusian swimmer Vasilina Khandoshka was third.
The European Swimming League's flagship event continues tomorrow, with six medal events scheduled including the first open-water swimming races.