Iguanids are almost all land-dwelling lizards. Many species, including most of the iguanines, crotaphytines, and phrynoso-matines, prefer arid areas. These desert dwellers often seek sites with at least some vegetation, rocks, or other cover to provide escape routes from predators. Other iguanids seek a wooded habitat, with some, like many corytophanines, living in rainforests. Within these varied habitats, iguanids may be either terrestrial or arboreal, with some switching between the two depending on time of day and outdoor temperature. The most unusual habitat among the iguanids is that of the well-known marine iguana of the Galápagos Islands. This lizard actually frequents salt water, where it forages marine algae to fill its diet.

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