Daley had only recently returned from the Beijing Olympics
Britain's Tom Daley has won two silver medals at the World Junior Diving Championships in Germany.
Daley, 14, who competed at the Beijing Olympics, finished two points behind China's Bo Qiu in the 10m platform after leading up to the last dive.
He said: "I'm gutted I didn't win gold. I dived really well up until that last dive but as I hit the water I was like, 'Oh no, what have I done?'"
Daley was second in the 3m springboard behind China's Dongliang Wu.
Dongliang, who took bronze in the 10m platform, won the springboard with 510.25 points as Daley picked up his second silver with 485.25.
It was scant consolation for the Plymouth teenager, who looked set to win the 14/15 years 10m platform title after winning the preliminary round and leading throughout the final.
He earned five perfect 10s for his third dive, a back three-and-a-half somersault with tuck but the degree of difficulty was just 3.3.
That gave Bo the chance to edge ahead with his third dive, which earned him 104.40 points, and he kept his nerve on his final dive to claim gold.
Britain's James Milton, who won this year's European junior title missed out on a bronze, finishing fourth after a poor penultimate dive.
Charles Calvert and Callum Johnstone also missed out on a medal by one place in the 18 years and under 3m synchro event.
Megan Sylvester made an error on her final dive in the 14/15 years platform which cost her a bronze medal by four points.