Across
- 3. Similar to octopus but with longer body
- 6. Apex ocean predator
- 7. Intelligent marine mammal
- 8. Hard-shelled marine reptile
- 10. Flower-like sea animal
- 12. Largest mammal in the sea
- 13. Eight-armed sea creature
- 14. Rise and fall of sea level
- 15. Sideways walking crustacean
Down
- 1. Five-armed echinoderm
- 2. Gentle sea mammal similar to manatee
- 4. Gelatinous floating creature
- 5. Colorful underwater structure
- 6. Plant-like ocean vegetation
- 9. Small upright swimming creature
- 11. Large clawed crustacean