sea stars

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Across
  1. 1. having a full rounded shape, rotund, chubby
  2. 3. spines
  3. 7. animals with hard shells
  4. 8. improve, enhance
Down
  1. 2. under the surface
  2. 4. beach
  3. 5. fascinating, attention catching, grabbing
  4. 6. different from what is usual or expected, uncommon, peculiar