Dreaming about being surrounded by water often symbolizes emotions and the subconscious mind. Water can represent your feelings or the state of your emotional health. In your case, the calm and clear water suggests that your emotions are relatively stable, but the anxiety you felt indicates that there may be underlying concerns or uncertainties you are facing in your waking life.

The ambiguity of the water's source (pool, ocean, or lake) might reflect your uncertainty about a particular situation or decision. It could signify that you are feeling overwhelmed by choices or that you are in a transitional phase where you are unsure of your direction.

To address this dream, consider the following:

1. Reflect on your feelings: What aspects of your life are currently causing you anxiety? Identifying these can help you understand the source of your feelings.
2. Embrace uncertainty: Recognize that it’s okay to feel unsure at times. Try to focus on what you can control and take small steps to address any issues that are bothering you.
3. Explore your emotions: Engage in activities that help you connect with your feelings, such as journaling, meditation, or talking with someone you trust.

By exploring these aspects, you may find clarity and comfort in navigating your waking life.