Slokam 6

The deluge of destruction covers the entire universe.  It is said in the slokam, that at the command of the Paramathma,  earth itself appeared as a boat,  in the vast expanse of water. The boat was tossed hither and thther by the waves of the deluge. 

In due course of time, annihilation took place, and the King saw a boat coming near. After getting aboard with learned brāhmaṇas and saintly persons, he offered prayers to worship the Supreme Personality of Godhead. The Supreme Lord is situated in everyone's heart, and thus he taught Mahārāja Satyavrata and the saintly persons about Vedic knowledge from the core of the heart. King Satyavrata took his next birth as Vaivasvata Manu, who is mentioned in Bhagavad-gītā. Vivasvān manave prāha: the sun-god spoke the science of Bhagavad-gītā to his son Manu. Because of being the son of Vivasvān, this Manu is known as Vaivasvata Manu.

Extract from https://vaniquotes.org/wiki/King_Satyavrata_later_became_the_son_of_the_sun-god_and_was_known_as_Sraddhadeva

In due course of time, annihilation took place, and the King saw a boat coming near. After getting aboard with learned brāhmaṇas and saintly persons, he offered prayers to worship the Supreme Personality of Godhead. The Supreme Lord is situated in everyone's heart, and thus he taught Mahārāja Satyavrata and the saintly persons about Vedic knowledge from the core of the heart. King Satyavrata took his next birth as Vaivasvata Manu, who is mentioned in Bhagavad-gītā. Vivasvān manave prāha: the sun-god spoke the science of Bhagavad-gītā to his son Manu. Because of being the son of Vivasvān, this Manu is known as Vaivasvata Manu.

As is evident from the transcript,  the deluge is the “pralayam” that happens at the end of the tenure of each brahma. 

To steady and guide the boat through the vast ocean, the Paramathma appears as the gigantic fish with horns.

May we always hold the Paramathma with resolve in our consciousness  to steady and guide us through the ocean of life.