Moore was visiting Las Vegas with toy boy lover Ashtn Kutcher, ex-husband Bruce Willis and children Tallulah, Scout and Rumer for Duran Duran's concert at The Joint, when they took a family trip to a water park.
The extended family unit visited Siegried and Roy's Secret Garden and Dolphin Habitat to take a swim with the much-loved mammals when one dolphin took an unwelcome shine to Demi.
An onlooker laughs, "Dolphins are very sexually aggressive, and one went after Demi in a big way," adding that the actress had to vacate the pool in a hurry.
Wallpapers of Demi Moore