My First Crossword Puzzle

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Across
  1. 7. Underwater Explorer
  2. 8. Insect Known for Light
  3. 9. Lisa: Famous Painting
  4. 11. Ancient Wonder
  5. 13. Nautical Device
  6. 16. Desert Animal
  7. 17. Cold Dessert
  8. 18. Fictional Hero
  9. 19. Bear: Cuddly Toy
  10. 20. Crispy Snack
Down
  1. 1. Liquid Gem
  2. 2. Magical Being
  3. 3. Melodic Instrument
  4. 4. Weather Phenomenon
  5. 5. Gentle Giant
  6. 6. Valuable Metal
  7. 10. Mythical Creature
  8. 12. Astronomical Phenomenon
  9. 14. Ocean Predator
  10. 15. Instrument