Former six times world champion swimmer Mark Foster has told Daybreak he learnt to swim because his father was "petrified of water".
He said: "It was safety reasons, first and foremost. My father at the age of 11 got thrown in the lake and was petrified of water, [he] still can't swim."
He added: "I think if you are a family, sitting round a poolside, constantly looking over your shoulder, how do you relax when you know your child can't swim and how does your child enjoy itself?"
More top news
West Yorkshire Police confirmed a 32-year-old woman was taken into custody in connection with the alleged threats.
Five women shared their views about whether Hillary Clinton's Democratic presidential nomination is a defining moment in US history.
The patient fired several shots at the doctor in a Berlin clinic before turning the gun on himself.