Pets of the Sea

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Across
  1. 4. fast-swimming cephalopod mollusk with ten arms.
  2. 5. a free-swimming marine coelenterate with a gelatinous bell.
  3. 6. a large marine crustacean with a cylindrical body.
  4. 8. a large gregarious waterbird with a long bill.
  5. 9. a snake-like fish with a slender elongated body and poorly developed fins.
Down
  1. 1. a large gregarious marine mammal related to the eared seals.
  2. 2. a hard stony substance secreted by certain marine coelenterates.
  3. 3. a bottom-dwelling marine ray with a flattened diamond-shaped.
  4. 4. typically marine and frequently harvested for food.
  5. 7. a seabird with long wings.