The tourist attractions in the community are numerous. The following activities are possible:

* hiking on the custom officers path as well as a whole network of interior trails, mountain biking, hunting, paragliding
* nautical activities are obviously important and include fishing, spear fishing, swimming, windsurfing and sailing

For boats up to 10m, the port of Barcaggiu has around 50 spaces.

Economically speaking the community of Ersa offers:

* one hotel, the HÙtel de la Giraglia in Barcaggiu
* two restaurants, U Pescadore in Barcaggiu and A Rinascita in Granaggiolo.
* three masonry and public works enterprises, Cap Corse B&Mac226;timents, Ersa BTP and SARL Maceri
* one artisan roofer (Luigi Bianco)
* three agricultural enterprises, Martine Grimaldi, Marie-JosÈe Albertini and Jean-Patrick Banizette (shepherd and producers of local cheese and brocciu
* one baker (Perrin)
* one garage and a transport company, SARL Micheli
* one post office
* one professional fisherman

Associations play an important role in the life of the community:

* The Culture and Sport Association of Ersa (ASCE)
* The Senior Citizens Association: the Happy People
* The Nautical Club of Tollari
* The Nautical Club of Barcaggiu
* The Association for the Restoration of Churches and Chapels
* The Ersa Hunting Society
* The Association for the Rural Development of Ersa (ADRE)