Fishy Business

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Across
  1. 4. Misunderstood Arctic dweller
  2. 7. First Period of the Paleozoic Era
  3. 8. Salty body of water
  4. 9. 8 armed mollusc
  5. 10. Slimy Eel
  6. 11. Found or Living in Water
  7. 12. Dogfish
  8. 14. Source of Caviar
  9. 15. Common radial souvenir
Down
  1. 1. Aquatic breathing organ
  2. 2. Common bivalve mollusc
  3. 3. Spookfish
  4. 5. Water Farming
  5. 6. Air breathing, freshwater dweller
  6. 13. Tasty Mesotherm
  7. 16. Rise and Fall