Illa de s'Espartar

The land is rocky and arid which supports 131 species including some endemic rare shrubs. This includes a very rare flowering alfalfa plant, alfalfa arborea. It is a member of the pea family and is on the red list^[3] of threatened species. Other vegetation includes such shrubs and herbs as rosemary, thyme and rue, which grow in abundance here. The fauna of the island includes an abundance of rabbits. There is also a sub-species^[4] of the Ibizan wall lizard on the island. It is also home to a colony of the endangered bird of prey Eleonora's falcon. There are also endemic beetles and snails. Birds include red-billed gulls and cormorants. There is also the largest colony in the western Mediterranean of the European storm petrel (Hydrobates pelagicus).