Flippers and Fins

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Across
  1. 1. wide flat body parts for swimming or moving
  2. 4. parts that form an object or living thing
  3. 7. helps animals live, thrive and stay alive
  4. 8. organs that help a marine animals move in water
Down
  1. 2. outside the body
  2. 3. to stay alive and thrive
  3. 5. the job or activity of a certain part or trait
  4. 6. all the living and non-living things around