The moneyed pair are having a winter break at an exclusive resort in Phuket, Thailand - but it appears Vladimir was stung by a jellyfish as he took a swim in the warm Andaman Sea.
Naomi, 40, appeared to be wincing as she checked out her 48-year-old lover's back as they braved the water again and took a dip - though this time, there were wary to go in too deep for fear of tangling with tentacles again.
