Periscope — the need to finish watching and start acting. The need for awareness.
The subconscious observation conscious reality. Target tracking. Periscope in the water symbolizes your conscious observation of reality through the prism of your emotional intuitive "self".
It is a symbol of the unconscious conscious observation of reality. Do you need to be an objective observer? Were you previously an objective observer? Is it time to participate in life, and not just watch it? If the periscope is in the water, it symbolizes your conscious observation of reality through the prism of your emotional intuition I.
Secretly to watch someone (to overhear).