Deep Waters Word Challenge

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Across
  1. 2. To completely surround and swallow up (6 letters)
  2. 3. A spinning whirlpool that pulls things toward its centre (6 letters)
  3. 6. Giving a feeling that something bad will happen soon (10 letters)
  4. 7. Dark and cloudy, hard to see through (5 letters)
  5. 8. The deepest, darkest part of the ocean floor (5 letters)
Down
  1. 1. Violently stormy and wild, like a hurricane at sea (11 letters)
  2. 2. Mysterious and puzzling, difficult to understand (9 letters)
  3. 4. The largest body of salt water on Earth (5 letters)
  4. 5. Without limits or edges, stretching on forever (9 letters)