The 2024 World Aquatics Championships will take place between 2 and 18 February in Qatar and you can follow on the BBC Sport website and app.
Athletes from 197 countries will compete in 75 events in swimming, diving and water sports, and many are hoping to secure a place for the rest of the 2024 Olympics in Paris.
Among those traveling to Doha are Great Britain’s Tom Daley and swimmer Adam Peaty, both gold medalists at Tokyo 2020, who have recently taken a break from their sport.
Who will compete for Team GB?
Daley returned to the water in December, after a two-year hiatus from the sport. If he succeeds in Doha, he would become the first British swimmer to compete in five Olympic Games.
The 29-year-old returned to action at the British National Diving Cup, winning gold in the 10m synchro with Noah Williams, who is also included in the pool of swimmers in Doha.
Three-time Olympic gold medalist Adam Peaty competed again after returning last October.
Peaty missed the 2023 World Cup in Japan, having retired from the sport to prioritize his health.
Diver Grace Reid, who has appeared in two Olympic Games, is looking to qualify for second place in the women’s 3m springboard competition.
The 27-year-old competed in the 1m springboard competition in Paris.
Team GB swimming competitors
British Swimming has named a squad of 20 swimmers to compete in Doha.
Their main goal will be to secure the position of the relay teams.
GB swimming team: Freya Colbert, Lauren Cox, Kathleen Dawson, Tom Dean, Luke Greenbank, Medi Harris, Lucy Hope, Anna Hopkin, Joe Litchfield, Max Litchfield, Jack McMillan, Adam Peaty, Ben Proud, Matthew Richards, Duncan Scott, Laura Stephens, Jacob Whittle , James Wilby, Brodie Williams, Abbie Wood
Team GB diving competition
There will be a group of 13 people who will compete in Doha in Great Britain.
They will aim for the final three spots – men’s 10m synchro, women’s 3m springboard and men’s 3m springboard.
GB diving team: Tom Daley, Dan Goodfellow, Anthony Harding, Yasmin Harper, Ross Haslam, Kyle Kothari, Jack Laugher, Matty Lee, Scarlett Mew Jensen, Grace Reid, Andrea Spendolini-Sirieix, Lois Toulson, Noah Williams
Team GB water polo team
Great Britain will return to international polo after an 11-year absence. The senior women’s team will face Italy, Canada and South Africa in their opening matches.
GB water polo team: Katie Brown, Annie Clapperton, Katy Cutler, Toula Falvey, Vicki Hawkins, Sophie Jackson, Niamh Moloney, Amelia Peters, Alex Robinson, Kathy Rogers, Brooke Tafazolli, Lily Turner, Lotte van Wingerden
Team GB open water swimmers
Four open swimmers will be looking to defend their Paris 2024 spots in the men’s and women’s 10km events.
The top 13 finishers in Doha, excluding the podium finishers, can earn a berth.
GB open water swimming team: Leah Crisp, Amber Keegan, Hector Pardoe, Toby Robinson
Team GB Artistic swimming competition
Great British swimmers Kate Shortman and Izzy Thorpe want to secure a place in Paris 2024.
If they win, it will be their second Olympic appearance.
Schedule of the World Aquatics Championships
Professional swimming: 2-10 February
Open water swimming: 3-8 February
Water polo: 16 February (women’s bronze and gold)
Where can I watch the World Aquatics Championships?
You can follow live updates on the BBC Sport live stream and app.