Paul McCartney, 81, and wife Nancy Shevell, 64, enjoy the ocean on beach vacation in St. Barts

Here comes the Caribbean sun.

Paul McCartney and his wife, Nancy Shevell, went for a dip in the Caribbean Sea during a vacation in St. Barts Wednesday.

The pair looked relaxed as they soaked up the sun and swam in the turquoise waters.

For the beach day, the Beatles musician rocked a black rashguard with multi-colored swim trunks that appeared to display a sunset design.

On the other hand, Shevell wore a pink, orange and white rashguard paired with a black swim skirt.

“They seemed as loved up as ever during their trip. Paul looked super fit and youthful for his age as he made sure to enjoy regular swims and he only had eyes for Nancy as they floated around in the waves together,” a source told the MEGA photo agency of their trip, per People.

Amid their outing, McCartney was photographed swimming with a pal and talking to him while draped in an orange towel.

St. Barts seems to be a favorite vacation spot for the couple as they were photographed relaxing on its shoreline in March 2021 and March 2023.

McCartney, 81, and Shevell, 64, began dating in 2007 and married four years later.

Although they normally keep their romance under wraps, the singer opened up about how he contributes to their marriage in a February 2023 post on his website.

“I see [my role as a husband] as just trying to be good to my wife Nancy and trying to be considerate and romantic,” he explained.

“I completely overdo Valentine’s Day! mean, there’s not just one card, there are cards hidden around the room, and sometimes things even spill into the next day – it’s completely silly. If there’s an excuse to have some fun, I overdo it!”

For more Page Six you love…

“I try to be helpful as a husband too,” he continued. “If there’s a problem, I like to be the guy that will lend some strength to it.

“I’m always very happy to be the person Nancy relies on, and to be her strength when she goes through tough times.”

Paul was first married to the late Linda McCartney from 1969 to 1998, and to Heather Mills from 2002 until 2008 (they had separated two years prior their divorce).