A nymph is a mythological creature, often associated with nature, and can take many forms. Mermaids are nymphs of the sea, maids are female servants, damsels are young women, naiads are water nymphs, dryads are tree nymphs, oreads are mountain nymphs, houris are beautiful female spirits, sprites are fairy-like creatures, echoes are nymphs of sound, DAPHNE is a nymph who was turned into a laurel tree, Nereids are sea nymphs, and CALLISTO is a nymph who was turned into a bear.