Canada and Russia shared the first four gold medals of the Diving World Series season as the new campaign opened in Montreal.
Three-times Olympic bronze medallist Meaghan Benfeito and Caeli McKay won the women's 10 metres synchronised platform event at the Centre Sportif au Parc Olympique, which hosted diving at Montreal 1976.
Benfeito and McKay topped the podium with a total of 313.02 points, 15.36 clear of Malaysia's Mun Yee Leong and Pandelela Pamg in second.
Iuliia Timoshinina and Ekaterina Beliaeva of Russia recovered from sixth place after the first dive to take bronze on 288.30 points.
Jennifer Abel and Melissa Citrini Beaulieu were the other Canadian victors on day one of the circuit as they claimed gold in the women's 3m synchro springboard competition.
Abel, a four-times Commonwealth Games gold medallist, and Citrini Beaulieu scored 298.83 points to beat Mexico's Paola Espinosa Sanchez and Melany Hernandez Torres, who amassed 286.20 to earn silver.
Russia's Kristina Ilinykh and Maria Poliakova did enough for bronze on 285.60.
The Russian team had two gold medals to cheer as Evgeny Kuznetsov and Nikita Shleikher won the men's 3m synchro springboard event, while Aleksandr Bondar and Viktor Minibaev took the 10m synchro platform honours.
Kuznetsov and Shleikher edged out Britain's Jack Laugher and Daniel Goodfellow with a score of 421.95 points.
The British pair were second on 415.74, while Yahel Castillo Huerta and Juan Manuel Celaya Hernandez of Mexico secured bronze on 407.22.
Bondar and Minibaev edged out the Mexican team of Kevin Berlin Reyes and Ivan Garcia Navarro with a score of 412.44 to seal Russia's second title of the day.
Reyes and Navarro narrowly claimed silver on 407.94 points, with the hosts' Vincent Riendeau and Nathan Zsombor-Murray third having scored 407.76.
Chinese divers are not competing at the event in the Canadian city, which is due to resume tomorrow, because of the coronavirus outbreak.