Crew seasickness 'stalls' Sean Conway's Britain swim
A man who is attempting to swim from Land's End to John O'Groats has been held up after his support crew became seasick a few miles from the start.
Sean Conway, 32, from Cheltenham, left west Cornwall on 30 June and is attempting to become the first person to swim the route.
Owain Wyn-Jones, from his support crew, said the sickness had caused a temporary stall "for about a day".
He added they were hoping to get stronger medication later.
Mr Wyn-Jones said two of the three members of the support crew had suffered.
On Monday night Mr Conway tweeted: "Anyone know a doctor in St Ives who can prescribe seasickness patches. The sea is rough and crew are struggling. Cheers guys."
Mr Conway said: "When I put an advert out for support crew one of the questions was do you get seasick and they all assured me they didn't.
"But to be honest even yesterday [Monday] I was feeling it, it was so bad."
Mr Wyn-Jones said the west Cornwall coast was "one of the most difficult areas to swim in the country".
He said the swell, tides and choppy seas had not helped.
His target is to swim the length of the English Channel each day and then sleep onboard a kayak or on the shore.
Mr Wyn-Jones said: "He might swim for six hours on and six hours off and will then eat and drink on the yacht."