Ocean life hazards

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Across
  1. 8. Remove sea life from ocean floor
  2. 9. A gas that absorbs radiation
  3. 10. Nasty unwanted animals
  4. 11. Harmful and poisonous wastes
Down
  1. 1. Too much fishing
  2. 2. Catching not only the target but other animals
  3. 3. Toxic
  4. 4. Discarding fishing gear
  5. 5. Waste that comes from fishes
  6. 6. Against the law fishing
  7. 7. Explosive