Verse 53

पोप्लूयमाना तरला केवलं परिदृश्यते ।तन्वी पुर्यष्टकेष्वेव प्रतिबिम्बजलेष्विव

In plain words

Heaving and tremulous, subtle, it is plainly seen only in the puryaṣṭakas -- as in waters that hold a reflection.