Vitamin Sea

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Across
  1. 3. A place to cool off
  2. 5. Homophone of a casual "yes"
  3. 6. Title, but from the Sun
  4. 7. Mitski rolls this around every night
  5. 8. Ride-filled popup
  6. 9. Simplified de-milked ice cream
  7. 10. You might find a lazy river here
  8. 14. She sells them by the sea shore
  9. 16. Helianthus, or song by Post Malone and Swae Lee
  10. 17. Students yearn for this all school year
  11. 18. Not the seven seas, the(main) two ___
  12. 19. Beach shade maker
Down
  1. 1. Would-be sour drink made sweet
  2. 2. Comes with a tradition of fireworks
  3. 4. Beach building
  4. 6. Popular beach game(for some reason)
  5. 11. Ice lolly, if you're British
  6. 12. Other than hotdogs
  7. 13. I scream for _____
  8. 15. Ouch! That hurts