What is the selection pressure for elephants having large ears?

The large ears of African elephants (Loxodonta africana) are primarily adaptations for thermoregulation, rather than a direct result of sexual selection. Elephants inhabit hot environments, and their large ears help them to regulate their body temperature. The extensive network of blood vessels in the ears facilitates heat loss through convection and radiation, aiding in cooling the body. This thermoregulatory function provides a significant advantage in managing body temperature in their warm habitats.