SB 10.45.40
sri-samudra uvaca
na caharsam aham deva
daityah pañcajano mahan
antar-jala-carah krsna
sankha-rupa-dharo ’surah
Translation:
The ocean replied: O Lord Krsna, it was not I who abducted him, but a demonic descendant of Diti named Pañcajana, who travels in the water in the form of a conch.
Purport:
Clearly the demon Pañcajana was too powerful for the ocean to control; otherwise the ocean would have prevented such an unlawful act.