Random things in life!

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Across
  1. 1. Snake-like sea creature
  2. 4. Shorter way of saying 'daddy'
  3. 7. Flat, round bread with tomato sauce and cheese
  4. 10. Informal way of saying 'toilet'
  5. 11. Feline
  6. 13. Synonym for 'water'
  7. 16. headwear
  8. 17. Married to a father
  9. 19. Global sports tournament
  10. 20. 100cm
Down
  1. 2. Opposite of beginning
  2. 3. Prehistoric reptile
  3. 5. French heavy metal band formed in 1997
  4. 6. Where rubbish is put
  5. 8. The 26 letters in the English language
  6. 9. Horned farm animal that eats anything!
  7. 12. Used to dry
  8. 14. long-necked woolly animal
  9. 15. Heads, shoulders, knees and ---?
  10. 18. --- Watson, actor of Hermione in Harry Potter films
  11. 19. Nocturnal bird of prey