Marine Noise Pollution

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Across
  1. 4. Autonomous Underwater Vehicle
  2. 6. Fish or invertebrate living on the ocean floor
  3. 7. Accidental capture of non-target species in fishing nets
  4. 9. Family group of whales or dolphins
  5. 10. Collisions between vessels and marine mammals
  6. 11. To search for food
  7. 12. When fishing gear or debris wraps around marine animals
  8. 14. Method using sound waves to map the ocean floor
  9. 15. Low-oxygen ocean area where animals cannot survive
  10. 16. Device used to detect underwater sounds
  11. 18. When marine mammals wash ashore unable to return to sea
Down
  1. 1. Extracting minerals from the ocean floor
  2. 2. Formation of bubbles in water that creates noise
  3. 3. Rotating blades that generate power from wind or water
  4. 5. Biological sonar used by marine mammals
  5. 8. To hinder or obstruct progress
  6. 13. Updating old equipment with new technology
  7. 17. Unit of sound measurement
  8. 19. To increase the strength of a signal or sound