During wet periods, Lake lriqui becomes a temporary wetland and a port of call and wintering site for many migratory water birds, including flamingos, coots and geese), which gives the park an important ecological character. The rehabilitation of the wetland was one of the main objectives, when the park was created.
In the park there are houbara bustards, North African ostriches, barbary sheep, dorcas gazelles, oryxes and striped hyenas. There is also a large number of reptiles such as lizard, wyches, monitor lizards, chameleons, geckos and different varieties of snakes.
Apart from a few families settled inside the park, the entire human population of the area are nomadic. The latter, mostly from M'hamid El Ghouzlane practice transhumance along the circuit Figuig - Tan-Tan. The lriqui area is the main place for grazing because of its good grazing potential.