The Sea

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Across
  1. 2. It has sharp teeth and is a great hunter
  2. 4. It has 8 legs and no arms
  3. 5. A shell that opens and closes
Down
  1. 1. It is small and it scuttles
  2. 2. It has eyes on the side of it's head and squirts ink
  3. 3. It is flat and grey with a sting it's tail.