The Pen-Bron beach of La Turballe is a nudist beach located south of the resort and the port facing Croisic. It is in the extension of the beach of the Great Cliff. It stops where the forest of maritime pines ends at the entrance to Pen Bron Point. This sandy beach is spread over several areas.

The one at the helio-marine center, on the point in front of Croisic is forbidden to bathe. The one on the side, just before the rehabilitation center, is allowed for swimming and is reserved for naturists in the zone between the ocean and the salt marshes and extends to the aid station.

The sanitary quality of the bathing water is classified excellent and stable for several years, but be aware this beach can get hit by very strong winds. The tip of Pen Bron is a protected dune massif. In order not to trample the flora, it is essential to use the footpaths.