The incredible dolphin

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Across
  1. 3. better or more important than others
  2. 5. to exchange information with others
  3. 7. smart
  4. 8. a way of doing something
Down
  1. 1. something that helps you succeed
  2. 2. emotions
  3. 3. a set of things that work together for a purpose
  4. 4. very similar
  5. 6. to help