Find where it is!

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Across
  1. 2. Which animal has eight legs and lives in the ocean?
  2. 3. What are the chics hatched from?
  3. 6. Which vehicle runs on rails?
Down
  1. 1. What do we celebrate on Valentine's Day?
  2. 4. What is more valuable than gold?
  3. 5. Which animal that mews?