अन्योन्यैः one to the other, सक्ताः striking each other, आहताः beaten, भीमनिस्सनाः frightening sound, सिन्धुराजस्य the ocean's, ऊर्मयः waves, हवे challenging each other , महाभेर्य इव like the blowing of horns of war, सस्वनुः made noise

The waves of the ocean striking each other making frightening sounds like the blowing of war horns seemed as if challenging each other.