The fun-loving couple took daredevil leaps off the side of the vessel while pals captured the high-jinks action on film.
Desperate Housewives star Eva, showing off her trim figure in a miniscule white striped bikini, bravely launched herself into the air over the warm waters of the Mediterranean. With her hair streaming out behind her and her legs curled up to the sky she managed a more graceful descent than her 27-year-old husband.
And the thrills didn't end there. The pair, who have been married for two years, then hopped onto a jet ski to race across the azure waves.
In the past Eva has pointed to their shared sense of fun as one of the things that makes the couple's marriage so strong. "We have fun together, we laugh together, do fun things together, and simply just enjoy having the other one around," says the 34-year-old.