La Grande Traversée
 

This is a French-Canadian series where a group of people are sailing from France to Canada on a 17th century ship replica. There is a nice but short moment in episode 6 where they decide to go skinny dipping:

https://ici.tou.tv/la-grande-traversee/S01E06 (around 32 mins)

It's lazily censored, and of course there's more male than female nudity, but I still liked it. I don't think this link is accessible from outside Canada, so I've captured the video for everyone to see.

Enjoy!