Danger Trigg Beach!

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Across
  1. 4. Used to coat surfboard. Non slip!
  2. 5. Surname of brothers who drowned at Blue Hole. 1947
  3. 7. Cartilaginous fish with a punch in its tail!
  4. 10. Number one Surf coach 2024.
  5. 11. Dangerous snake of the Trigg sand dunes.
  6. 15. Hermaphrodites, float like a butterfly and sting like a bee.
  7. 16. Dangerous mollusc. Do not pick up! (2 words)
  8. 17. Direction from which the hot summer winds emanate.
  9. 18. Trench along which water travels sideways.
  10. 19. Malignant form of skin cancer.
Down
  1. 1. Cooling sea breeze on hot days nickname. (2 words)
  2. 2. Shark assumed responsible for fatality in Swan River. (2 words)
  3. 3. Deadly, vibrant colour mollusc, may hide in cans. (3 words)
  4. 6. Trigg Island Surf Life Saving Club formed in this month.
  5. 8. Strong current that drags away from the shore.
  6. 9. Steering device on modern surfboards.
  7. 12. Carcharodon carcharias (2 words).
  8. 13. Critical to do this for sun protection. (3 words)
  9. 14. Best treatment for jellyfish and stingray stings. (2 words)