BBC Sport - Get Inspired: Jack Burnell on why he loves open-water marathon swimming
'Under the water anything goes'
- From the section Get Inspired
Team GB's Jack Burnell says the unpredictability of open-water marathon swimming is why he loves the event so much.
But it's not for the feint-hearted as he reveals things can get quite rough!
If you want to learn more about getting into swimming, have a look at our special guide.