Now, best of noble mountains, rise And do the thing that I advise. E’en now above thy buried crest Flies mighty Hanumán, the best Of Vánars, moved for Ráma’s sake A wondrous deed to undertake. Lift up thy head that he may stay And rest him on his weary way.”

In plain words: The Sea asks Mainaka to rise up out of the water. Hanuman is flying overhead on a great mission for Rama, and the Sea wants Mainaka to give him a place to rest on his tiring journey.