What large ears you have?
An African elephant’s ears are about one-sixth the size of its large body. Elephants don’t have sweat gland so they flap their ears and use them to cool down in the hot African sun. The extensive blood vessels that passes through the ears also radiate heat away. Spraying their ears with water and flapping will definitely aid in the cooling process.
And of course, they use them as fans to get rid of pesky flies.