SB 4.10.27
samudra urmibhir bhimah
plavayan sarvato bhuvam
asasada maha-hradah
kalpanta iva bhisanah
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Then, as if it were the time of the dissolution of the whole world, the fierce sea with foaming waves and great roaring sounds came forward before him.