The star's partner was part of a recent Baywatch-style sea rescue on a Mexican beach.
© Josiah True/WENN.com
© WENN
When Roberts found out that a nearby man was suffering from cramp on the beach resort of Akumal, she immediately ran to his aid.
She told BBC Wales: "I was busy chasing a turtle when I heard from far away, 'Help! Help!' I looked up and saw a man in distress.
"I immediately started to swim towards him out of instinct and shouted to David, who wasn't too far away, 'David, that man needs help!'"
She added: "Luckily, as I arrived to him another man was already there. I said to David, 'I made a rescue!' He said, 'Good job, you could have been on Baywatch."
