? WHO eats WHO ?

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Across
  1. 2. A thin slice of potato fried until crisp.
  2. 3. A group of people who work on and operate a ship or aircraft.
  3. 8. To deplete the stock of fish by excessive fishing.
  4. 11. A person who dives underwater, especially as a job.
  5. 12. A type of fish with a flattened body and large pectoral fins.
  6. 13. A circumstance that contributes to a result.
Down
  1. 1. rig A large structure with equipment for drilling an oil well.
  2. 2. A structure of bars or wires in which animals are confined.
  3. 3. A large marine fish with a mild flavor.
  4. 4. A very large marine mammal with a streamlined body.
  5. 5. To fill with terror or fear.
  6. 6. A large predatory fish with a cartilaginous skeleton.
  7. 7. Of very great size or force.
  8. 9. A number of different types of things.
  9. 10. Mental sharpness and inventiveness.