Ocean (hard)

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Across
  1. 4. Chip stealer.
  2. 6. Ocean version of an echidna.
  3. 7. Extremely intelligent and flexible sea creature.
  4. 10. Nemo lives here.
  5. 11. Often confused with sea lions.
  6. 13. Algae
  7. 15. The rise and fall of the ocean level due to the phases of the moon.
  8. 16. An aquatic reptile that has a shell.
Down
  1. 1. This creature is like an underwater balloon.
  2. 2. Shallow body of water separated from a larger body of water.
  3. 3. A whale's main source of food.
  4. 5. Salt + water
  5. 8. Swimming with the fish as a hobby some people do.
  6. 9. Seaweed
  7. 12. Poseidon lives there.
  8. 14. The bottom of the ocean.