You are putting pressure to water first and now fire if you put pressure on me you will see me everywhere. This is how life is.
But from sprituality prospective there are many reasons why water and fire are called together. Both of these are part of creation of this physical universe and destruction as well.
For Creating:
First The consciousness becomes ignorance and because of unawareness of consciousness space is created from its bright part.
People call Consciousness is God, Creator, Almighty, The one, Superior, Allah, etc.
From Space Air was created.
From Space and Air Fire Was created.
From Space, Air, and Fire Water was created.
From Space, Air, Fire, and Water Earthly planets were created.
Earth, water, fire, air, and space (ether) are the five elements of nature that are also known as the “Panch Mahabhoot”.
These elements represent the states of matter in nature and the laws of nature that result from their relationships with each other.
For example, fire and water are enemies that will destroy each other if they have the chance
The five elements are:
Earth: Solid matter, such as bones, tissues, flesh, skin, and hair
Water: Liquid matter, such as saliva, blood, water, petrol, lava, sweat, urine, and semen
Fire: Transforms one state of matter into another, such as heat that drives needs like hunger, thirst, and sleep
Air: Gas, such as breath and movementSpace: The mother of the other elements, and the basis of higher spiritual experiences
For Destruction of Universe:
Earth Will be destroyed by Water
Water will be destroyed by Fire
Fire will be destroyed by Air
Air will be destroyed by Space
Space will be mixed with the ignorance again. That concludes the first cycle of universe creation.Again, new creations will be started with ignorance again. And goes on the same cycle again and again.