San Esteban Island is home to many types of rare animal species found on only a few of the islands, such as the San Esteban chuckwalla (Sauromalus varius), the spiny chuckwalla (S. hispidus) and the spiny-tailed iguana (Ctenosaura conspicuosa).[3]
^Mary B. Moser and Stephen A. Marlett, compilers (2005) Comcáac quih yaza quih hant ihíip hac: Diccionario seri-español-inglés[1] Hermosillo, Sonora and Mexico City: Universidad de Sonora and Plaza y Valdés Editores.
Bowen, Thomas (2001). Unknown Island: Seri Indians, Europeans, and San Esteban Island in the Gulf of California. Albuquerque: University of New Mexico Press.
Villalpando C., María Elisa (1989). Los que viven en las montañas: Correlación arqueológico-etnográfica en Isla San Esteban, Sonora, México. Hermosillo, Sonora: Centro Regional Sonora, INAH. (in Spanish).