Water Day retroactive

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Across
  1. 4. The largest freshwater system in the world
  2. 5. Spanish word for "water"
  3. 6. Frozen water that falls from the sky
  4. 9. Open-air structure for transporting water
  5. 10. What water does when it freezes
  6. 12. This organism, known for its intelligence, is 70% water.
  7. 14. A clawed crustacean
  8. 15. Water that falls from the sky
  9. 17. A Nordic country on a small island in the Atlantic
Down
  1. 1. The water between England and France
  2. 2. A common table waiter game at Thunderbird
  3. 3. Two of these in Minecraft will get you an infinite water source
  4. 7. The largest mammal on Earth
  5. 8. These oceanic critters spew ink to deter foes
  6. 11. This continent is entirely covered in ice
  7. 13. A type of bird that features in Happy Feet and Surfs up
  8. 16. Frozen water