For Fun Part II

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Across
  1. 3. Systematic study to reach conclusions
  2. 4. Environmental science
  3. 5. Giant sea mammal
  4. 6. Beautifully colored, shell-less gastropod
  5. 11. Place where schools are reared
  6. 13. Shark without claws
  7. 15. Eight-limbed, tentacled cephalopod
  8. 17. Study of nucleotide sequences
  9. 20. Jaws
  10. 21. Spiral-shelled mollusk
  11. 22. Nautical
  12. 23. Tiny Crustacean w/ 10 legs & often eaten
Down
  1. 1. Ocean invertebrates lacking brains, blood, or hearts
  2. 2. Deep study
  3. 6. Echinoderm w/ 5 or more radiating arms
  4. 7. Preserving and protecting
  5. 8. Sandy, windy, salty
  6. 9. Dam Proud
  7. 10. Water farming
  8. 12. Flatfish
  9. 14. Pacific coast barker
  10. 16. US state, capital Salem
  11. 18. Mollusk eaten raw
  12. 19. Novel harbor