March In The Beach

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Across
  1. 2. – Provides light in darkness (6)
  2. 3. – Used for highlighting (6)
  3. 5. – Heavy weather event (5)
  4. 8. – Holds liquid (6)
  5. 11. – You write with it (6)
  6. 13. – Triangular ancient structure (7)
  7. 14. – Underground passage (6)
  8. 15. – Sour yellow fruit (5)
  9. 17. Words and Clues
  10. 18. – Third planet from the sun (5)
Down
  1. 1. – Tells time (5)
  2. 4. – Flows to the sea (5)
  3. 6. – Salty expanse (5)
  4. 7. – Six-stringed instrument (6)
  5. 8. – Connects two places (6)
  6. 9. – Used to flavour food (6)
  7. 10. – Keeps the doctor away (5)
  8. 11. – Orbits a star (6)
  9. 12. – Lets in light (6)
  10. 14. – Pulls cars along tracks (5)
  11. 16. – Month after February (5)