There is a unofficial nude beach in New Brunswick, Bouchibougac,NB and in PEI there is a beach(unofficial) at Blooming Point, PEI. I will be travelling out there in the next few weeks for family and vacation.
There is a nude beach at Crystal Crescent Beach outside Halifax. I have been there many times. When you get to the parking lot, go to the third beach farthest from the lot. It is a short hike. When there, strip off, and enjoy the sun on your naked body. Many non-nudists walk the trails but ignore you. On a good warm weekend there may be as many as 100 nudists on the beach, ans many non nude as well.