Prabhupāda: . . . stones shows that there was water. (break) Shape of the stone indicates that there was water fall.
Devotee: One time though the ocean was this high. (break)
Prabhupāda: Actually, before planet was covered with water. Pralaya-payodhi-jale dhṛtavān asi vedam (Śrī Daśāvatāra Stotra 1). It's going down, water. Now the one fourth dried up, and gradually the remaining three fourths will be dried. There will be no water.
Devotee: Is that when Kṛṣṇa incarnated as a fish? Was that on this planet?
Prabhupāda: Yes, when there was pralaya. This is the way how creation carries on.