But they cannot be killed, as they have taken shelter under the sea. You should therefore find out some means to dry up the ocean.
न तु शक्या: क्षयं नेतुं समुद्राश्रयगा हि ते। समुद्रस्य क्षये बुद्धिर्भवद्भिः सम्प्रधार्यताम्॥