130 people made the journey between Mumbles and Aberavon beach on stand up paddleboards in order to raise money for charity.
Organisers said the event, which saw the participants paddle nearly 8.5 miles, was the first of its kind.
They raised over £2,000 for the RNLI and the local lifeguard club, split equally.
The paddleboarders set off at 12:30pm from Mumbles, before arriving at the Aberavon RNLI station between 3:30 and 4:30pm.
A video posted on Youtube by the organisers shows the scale of the number of stand up paddleboarders (SUPs) as they set off from Mumbles.
Organiser Paul O’Dwyer told ITV Cymru Wales: “The feeling is outstanding to be honest. Seeing the faces of novices complete the epic adventure was heart warming.
“I love to bring success to people be it climbing mountains or completing great paddles.Seeing the pictures online after the event with so many smiling faces gives me a very warm feeling inside”.
The fastest crossing was 1 hour and 14 minutes by a professional athlete, while the slowest did it in just under 3.5 hours.
One person swam the entire 8.4 miles alongside the paddleboarders.
On social media, people who completed the challenge said they had loved the event but joked that they were “aching all over”.
One paddleboarder said on Facebook: “Thank you so much to all who arranged, co-ordinated, kept everyone safe and in general for just being awesome.
“What an amazing challenge. You should all feel so proud for helping people who never thought they’d achieve something as big as this”.
Another successful participant wrote: “What a memorable thing to do! Such an achievement for everyone today! Thank you to every one who came to wish us all on and those that were there for us through out and the ones waiting for us at the end!”
The event organisers, Salty Dog SUP’ers, hope to run the event annually following the success of this year.
Credit: ITV News