Across
- 4. Continuous ocean movement
- 7. Temperate grassland
- 10. Coral or rock underwater ridge
- 11. Land surrounded by water on three sides
- 13. Tropical grassland
- 14. Land bordering the sea
- 15. Fertile spot in a desert
- 17. Ring-shaped coral island
- 18. Wind-shaped sand hill
Down
- 1. Chain of islands
- 2. Smaller division of an ocean
- 3. Sandy shoreline
- 4. Steep rock face
- 5. Rise and fall of sea level
- 6. Largest body of saltwater
- 8. Land surrounded by water
- 9. Narrow land bridge
- 12. Surface water motion
- 16. Edge of water and land
- 18. Extremely dry region