"Sunlit Sea, Lightless Sea, and Dark Sea."
"The Sunlit Sea represents the first stage of the Deep Sea Meditation Art. At this stage, one's consciousness can only sink into the shallow depths, a realm that exists at the boundary between reality and illusion. Here, everything remains within the scope of cognition. This stage corresponds to low-level wizard apprentices."
"The Lightless Sea is the second stage of the Deep Sea Meditation Art. When the sea of consciousness reaches this point, visibility diminishes to the point where one cannot even see their finger. They have drifted far away from reality and entered the realm of illusions. The spiritual power becomes even stronger. This stage corresponds to intermediate-level wizard apprentices."