Sea Monsters

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Across
  1. 6. known as the father of all monsters
  2. 10. a sailor
  3. 11. a type of ship used from circa 1500 or before
  4. 14. dangerous creatures who lure sailors through their enchanting music, causing them to shipwreck
  5. 15. turbulent conflicting emotion / stormy
  6. 16. monstrous sea creature symbolizing evil in the old testament
  7. 19. taking ownership of an area of land or sea
  8. 20. legendary sea monster of scandinavian origin
  9. 21. group of four griffindor classmates known for rule-breaking and mischief-making / a raider
Down
  1. 1. unnamed / unclassified
  2. 2. in relation to navigation of ships on sea
  3. 3. deriving from greek mythology, a sea creature who haunts the rocks of a narrow strait opposite the whirlpool of charybdis
  4. 4. a sea monster in greek mythology / a constellation
  5. 5. antonym for familiar / video game series
  6. 7. a watercraft
  7. 8. "into the ________"
  8. 9. fabled, legend, folkloric
  9. 12. huge or monstrous creature
  10. 13. traditional folk song sung by sailors while performing physical labour together
  11. 14. nausea caused by the motion of a ship at sea
  12. 17. wanting or devouring large quantities of food
  13. 18. travelling