Is Luna saying "Anybody want to go in for a dip with me?"
Definitely not! Luna will wade when it's warm but she is not a swimmer unless forced. She likes to keep her paws dry in the winter too.
What she did here is I was shooting away with my tripod and waiting for light and she was getting bored. So she came and posed for me all on her own in front of my subject. As soon as she hears the click of the shutter, she demands compensation. It reminds me of traveling in third world countries, lol.