Underwater Mysteries

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Across
  1. 5. something you find, normally quite important
  2. 6. weather condition with lots of wind and rain
  3. 7. something you travel in across the sea
  4. 8. low land between hills normally with a river
  5. 9. huge terrifying creature
Down
  1. 1. a ship at the bottom of the sea
  2. 2. below the surface of the water
  3. 3. name for a very big sea
  4. 4. where you finally arrive
  5. 10. the noun of explore