Rock pool creatures

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Across
  1. 3. What colour was the anemone.
  2. 5. There were six of these.
  3. 7. There were three of these.
Down
  1. 1. There were four of these
  2. 2. How many sea urchins did I see?
  3. 4. How many periwinkles did I see?
  4. 6. How many hermit crabs did I see?