Enjoy the nice beach town LA BAULE. You really should go shopping there at the boulevard and enjoy all the tropical cocktails ;)
Visit the Ocearium at CROISIC. It's a lovely sea - aquarium. You can read more about it in my TRAVELLOGUE!
Here is a picture of my brother at that beach near the campground. Here you can even see better how clear the water is.
Visit the town of PIRIAC-SUR-MER. There is a nice old town heart to see, the sea (Atlantic Ocean)looks beautiful and the restaurants & live theater are great here!