Ocean Explorers

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Across
  1. 3. Tools we use every day (7 letters)
  2. 4. Body movements that show meaning (8 letters)
  3. 6. Animals that use sonar to communicate (8 letters)
  4. 8. Ocean predators with sharp teeth (6 letters)
  5. 9. Quick movement in water (6 letters)
Down
  1. 1. Long talks between people (13 letters)
  2. 2. To discover new things (7 letters)
  3. 5. People who study nature and science (10 letters)
  4. 7. Something that you can use to replace something that does not work or is lost (5 letters)