Tunnels, doorways, bureau drawers or mossy caves represent a desire for affection of the need to get closer to a female in your life.
Being chased means you are running away from something that is too difficult or you are avoiding a confrontation.
Dreaming of creatures from outer space can be an indication that some outside force is playing a role in your life and you are uncertain of your surroundings or something that is going on in your life.
A calm stream of water stands for security, safety and comfort. Turbulent water on the other hand can mean there is a disruptive force in your current environment or that you feel overwhelmed.
A drop generally means instability in your life but a free fall with no clear beginning or end represents a lack of connection the world around you.
Contrary to what most people think ongoing nightmares are nothing to worry about.