The Banc d'Arguin is a major resting area for birds migrating between Europe, northern Asia and Africa. Many species use the park for breeding as well.

The large part of the Atlantic Ocean that is also included in the park is very shallow (only about 3 m (10 ft) deep up to 25 km (15 mi) from the coast), and the water is crystal clear. There are numerous sandy islands of which Tidra is the largest. Other interesting islands include Arguim, Kijji, Nair and Niroumi. There are also many sand banks, where you can see forestering birds.

Since most birds forester on the islands, the only way to see them is by boat, but you'll need special permits from the park service, a guide and your own boat. On top of that you will need a 4WD vehicle to get there, as the journey involves driving some 200 km (125 mi) along the sandy beach and through the desert. Make sure your vehicle is not on the beach when the tide comes in.

The surrounding waters are some of the richest fishing waters in western Africa.

Banc d'Arguin National Park covers a huge coastal expanse of mudflats, roughly between Nouâdhibou in the north of Mauritania and Nouâmghâr, 150 km northwest of Nouakchott. The area is the former mouth of the Tamanrasset River.

Entrance to the park is not allowed during the bird's mating seasons (twice a year). The park is best accessed from the south and its administrative center is at Nouâmghâr. Banc d'Arguin National Park was established in 1976. It is a UNESCO world heritage site.