" Soon the heavens will burst and torrential rains will flood the earth. The sea will rise and submerge the land. When this happens collect the seed of every plant and a pair of every animal and wait for me on a boat with your wife.’ Realizing this was no ordinary fish, but Vishnu himself, Satyavrata did as he was told. The great fish appeared before him, bigger than before, with a horn on its head. Satyavrata tied his boat to the horn with Adi Sesha as the rope. The fish then towed the boat through the great deluge to the only piece of dry land, the peak of Mount Mandara. There Satyavrata and his wife waited for the waters to recede. With the seed of every plant and a pair of all animals he would establish the new world. (Bhagavata Purana) "
― Devdutt Pattanaik , Myth = Mithya: A Handbook of Hindu Mythology