He Chao from China
The World Aquatics Championships have just started in Russia.
Top athletes from all over the world are in the city of Kazan taking part in various events, including swimming, water polo and diving.

Jahir Angel Ocampo Marroquin of Mexico
Image caption Jahir Angel Ocampo Marroquin of Mexico
These photos are from the diving 1m springboard preliminary round.
Matthieu Rosset of France
Image caption Matthieu Rosset of France
The divers have been captured on camera pulling some amusing faces mid-dive.
Evgenii Novoselov of Russia
Image caption Evgenii Novoselov of Russia
But the competition is nothing to be laughed at - the total prize money at stake is worth millions.