Oceans

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Across
  1. 4. (very fast; not slow)
  2. 6. (to remove chains or restraints)
  3. 8. (large ice mass slowly moving over land)
  4. 10. ice (tiny floating ice crystals in water)
Down
  1. 1. (to slowly wear away)
  2. 2. (sheets of ice floating in the ocean)
  3. 3. (small shrimp-like animals eaten by whales)
  4. 5. (to wait secretly or hide)
  5. 7. (simple plants in water)
  6. 9. (floating chunk of ice broken from a glacier)