A Blue Peter presenter will today set off from a Northern Ireland beach in a bid to cross the Irish Sea in an inflatable bubble.
Lindsey Russell (25) will attempt to cross more than 20 miles of open water between Donaghadee and Portpatrick in Scotland for Sport Relief.
Using a specially constructed inflatable zorb ball, attached to a structure of paddles on the outside, Lindsey will move across the water by rolling the ball from the inside with her hands and feet.
Speaking to the Belfast Telegraph, the TV presenter joked the episode would turn her into a "little hamster" on the sea.
"I guess the sea has been crossed in so many ways - jet skiing or swimming - but this just felt different and silly and a bit mad," she said.