15 June 2011 Last updated at 12:21

Keri-Anne Payne's guide to open water swimming

Double world champion and Olympic silver medallist Keri-Anne Payne gives BBC Sport a guide to open water swimming, including tips on how to get involved and what equipment you will need.

The BBC's 'Big Splash' aims to get more people swimming in the build-up to the 2012 Olympics. To find out more go to bbc.co.uk/bigsplash