Across
- 3. spot where the river meets the sea
- 5. ocean travel route
- 7. tropical cyclone
- 9. large marine mammal
- 10. boat that submerges and travels fully underwater
- 12. a gelatinous clear-colored aquatic invertebrate with stinging tentacles
Down
- 1. directed movement of sea water
- 2. brackish water with high salt content
- 4. large sea mammal with tusks
- 6. marine fish that swims upright
- 8. fish that can inflate its body
- 11. floating object in the sea to serve as a warning or guide