Across
- 1. a large structure with facilities to extract and process petroleum and natural gas that lie in rock formations beneath the seabed
- 3. a type of hole created by the action of ocean waves
- 4. a structure separating land and water areas
- 5. Dangerous weather
- 6. any steep rock face especially at the edge of the sea
- 7. the up and down movements of water in the sea
- 10. made of small pieces of sand that collect on the shores of bodies of water
- 11. a column of rock standing in the sea, remaining after erosion of cliffs
Down
- 2. The periodic rise and fall of water in coves and other places that occurs every 12 hours due to the gravitational pull of the moon and sun.
- 3. the out line of a coast
- 8. a natural hole carved through a headland
- 9. a narrow piece of land that projects from a coastline into the sea