Valmiki Ramayana Yuddha Kanda Sarga 21 Shloka 29

सहसा all of a sudden, महोदधिः great ocean, महोर्मिजालचलितः with the movement of the water, शङ्खजालसमावृतः filled with conchs and shells, सधूमः terrific smoke, परिवृत्तोर्मिः whirling round and rising up, आसीत् played around.

With the movement of the sea water filled with the conchs and shells suddenly terrific smoke whirling round and rising played around.