sardine

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Across
  1. 2. – Rise and fall of sea level due to gravity (4 letters)
  2. 4. - Ocean where European sardines are found (8 letters)
  3. 7. – Marine invertebrates that build reefs (5 letters)
  4. 9. – Cold-water fish often used in fish and chips (3 letters)
  5. 10. - Long, snake-like fish (4 letters)
  6. 12. – Large, fast-swimming fish targeted by commercial fisheries (4 letters)
  7. 14. - the missing word (7 letters)
Down
  1. 1. - Fishing method using purse seines
  2. 3. – Organs that allow fish to extract oxygen from water (5 letters)
  3. 5. – Small oily fish often used in pizza or sauces (7 letters)
  4. 6. – Flowing movement of seawater, like the Gulf Stream (7 letters)
  5. 8. - Marine mammals that hunt sardines (8 letters)
  6. 11. – Flowering plants forming underwater meadows (8 letters)
  7. 13. - Underwater structure where fish gather (4 letters)
  8. 14. – Predatory fish with cartilaginous skeletons (6 letters)