Diving symbolizes a serious temptation or ordeal with which you are or will soon be faced.
The prediction of the outcome of your action depends on the condition of the water; if it was clear, you will be gratified with the result, but if the water was murky and/or choppy, you can expect to have unpleasant repercussions.
[1]Dreams of diving into a pool symbolize that you are committing yourself, immersing your self whole-heartedly into a belief system, relationship, or project.
[2]Moving head-first into a situation; see “water”
[3]