Elementals are "Nature's Angels" and they are referred to by various names including Fairies, Elves, or Sprites. These nature spirits are governed by the Archangels. Elementals do not have a definite form or appearance, but they can choose to how to present themselves to a human. For example they may choose a form that you will recognize and be comfortable with or will associate with the element they represent.
A fire elemental may appear as a spark, a face in a candle flame or bonfire, or simply a sudden warm spot. A water elemental may be a cold spot. An air elemental could be a sudden breeze or tiny whirlwind in the dust. A smell, taste, or an unexplained pebble in one's shoe could be evidence of the earth elementals at play.
An elemental can also be worshiped as a deity when they take the shape and form of a being that a certain group of people worship in reverence to. For example, a water elemental can take the shape of a dragon, and to the Japanese, it was worshiped as the dragon god Ryujin whom ruled over the seas.
Elementals are very mischievous and are fond to play, but their play may appear to humans as disasters rather than play, such as thunderstorms, blizzards, and raging seas. When Elementals decide to enjoy themselves, it is best for the humans to take cover and hope they tire soon. Contrary to how it seems, Elementals activities are not always destructive, even though it may seem that way to humans at times. The Elementals have their own agenda and they have a definite purpose, which we may not understand, but may be for the good of the planet as a whole.