Across
- 4. Slender, snake-like, aquatic fish
- 5. Fast-swimming, meaty, aquatic fish
- 7. Claw-waving, shell-covered, crustacean
- 8. Intelligent, eight-armed, shape-shifting cephalopod
- 11. Large, claw-waving, crustacean
- 12. Small, shell-covered, crustacean
- 15. Large, aquatic, mammal with a powerful tail
- 16. Intelligent, social, aquatic mammal
- 17. Fin-footed, semi-aquatic, carnivorous mammal
- 18. Gelatinous, stinging, marine invertebrate
Down
- 1. Large, fast-swimming, aquatic fish
- 2. Small, brightly colored, coral-dwelling fish
- 3. Slow-moving, long-lived, aquatic reptile
- 6. Fast-swimming, bill-first, aquatic fish
- 9. Large, tentacled, deep-sea cephalopod
- 10. Five-armed, slow-moving, marine invertebrate
- 12. Fierce, carnivorous, toothy fish
- 13. Flat, disk-shaped, aquatic fish
- 14. Slow-moving, aquatic, herbivorous mammal
- 15. Large, tusked, Arctic marine mammal