Comedian David Walliams has done his bit for Sport Relief, swimming the channel from England to France.
It took Walliams 10 hours and 30 minutes to complete the 21-mile swim, around four hours less than he thought.
Walliams is hoping to raise as much as £500,000 for Sport Relief and had to train for 11 months to get in shape for the swim.
Only 10% of people who try to swim the English channel actually manage to complete the crossing.
After finishing the swim Walliams found out he was one of the 50 fastest people to swim the channel.
Walliams had to be covered in grease to keep him warm
He said: "Conditions were good today but it was really, really tough - parts of it were misery. But I'm delighted that I managed to do it.
"I got about half way and thought 'I can do this'. Then I just tried not to think too much about what I was doing and got on with it.
"The reason I did this was to raise money for Sport Relief and its not too late for people to sign up for the Sport Relief Mile and raise money too - but I wouldn't recommend coming down to Dover, stripping off and trying to swim to France, because it's quite difficult!"