what does "dark moving" mean here?


New Member
what does "dark moving" mean here?

"As usual the ocean was restless, a counterpoint of white crests and dark moving hills."
  • Egmont

    Senior Member
    English - U.S.
    It would have been clearer with a comma after "dark."

    By the way, could you please tell us where this sentence came from? WRF rules require a person who asks a question about a quotation to provide its source, because it often provides important context for understanding a word or phrase.