Daily Riddle #2

A morning riddle you guys. But first, if anyone didn't know the answer to yesterday's riddle (it was a pretty famous one), the answer was A Man (a crawling baby in the morning, upright as a man at noon, and walking with a cane as an old man in the evening).

Your new riddle: What whispers, but never speaks, what roars but never shouts, what moves but doesn't walk?

Now RiddleIt!