Britain's Tonia Couch finished ninth in the 10m platform final at the World Championships in Shanghai as China won a seventh gold.
The 22-year-old from Plymouth was eighth at the last World Championships and at the 2008 Beijing Olympics.
She managed a total of 316.06 in a keenly contested final.
China's Olympic champion Chen Ruolin took the gold with a score of 405.30, while her compatriot Hu Yadan finished on 394.00.
Hu had a miss in her penultimate dive but overcame the error to earn earn five perfect 10s on her final dive.
Defending champion Paola Espinosa of Mexico took the bronze with 377.15.
However, Couch's performance in reaching the final means GB have obtained a place in the event at next year's London Olympics.
"I'm happy with my final," she said. "I stepped up from the prelim and improved my ranking.
"The dives were okay. Not the best they could be but okay.
"I'm very chuffed to have made my fourth world final in a row and it feels really great to prove myself at this level.
"The aim was to get the Olympic spot and a World Series position. I just missed out on the World Series but to give Great Britain an Olympic place feels pretty good."
Earlier in the week Couch and partner Sarah Barrow finished fourth in the 10m synchro event.
Elsewhere, double world junior champion Jack Laugher qualified in 11th for Friday's 3m springboard final.
The 16-year-old produced a consistent series of dives to finish with 436.60 points and his performance guarantees GB another quota place in the event.
He Chong edged out Chinese countryman Qin Kai by just 0.25pts to qualify first with Russia's Ilya Zakharov in third.