This clip from episode one of the Doctor Who story 'The Enemy of the World' shows the Doctor, played by Patrick Troughton, going for a dip in the sea.
The 1967 episode is one of nine tracked down in a store room at a Nigerian TV station, where they were gathering dust.
Footage courtesy of BBC Worldwide.
More top news
Scientists have discovered the oldest known earth-size planets discovered which they say raises the prospect of 'ancient life'.
Auschwitz survivor Alina Dabrowska was a victim of the cruel experiments of Nazi doctor Josef Mengele, known as "the Angel of Death."
Here are just some of the faces and stories of Auschwitz survivors 70 years on from the concentration camp's liberation.