You know those belly flops you do into your swimming pool at backyard barbecues? Feck did sort of the reverse of that, as you can see in the video above. You can also watch the dive with commentary here.
Feck was doing one of those flippy, twisty dives that divers do when he lost the grip on his left leg and slammed back first into the water.
He received a total of zero points for his dive. He dropped out of the competition after his next dive.
Of course, this isn't the only water sport Germany has had trouble in at London. Four-time gold medalist and German swim legend Roland Matthes used the words "shameful and inept" to describe Germany's complete flop in the swim event, having won no Olympic medals for the first time since 1932.
Lisa Dillman in London contributed to this report.