The phrase "like seeing a river in motion" is typically used to describe a visually mesmerizing sight or a captivating experience. Just as watching a river flowing can be calming and captivating due to the constant movement and ever-changing patterns, so can the phrase convey a sense of awe, beauty, or dynamism. It suggests witnessing something that is visually or emotionally striking, often conveying the idea of being engrossed or fascinated by what one sees or experiences.
