1. Smooth wavelike motion

2. Current beneath the surface of waves

3. Large and powerful tidal wave

4. Bubbles formed on the surface of water

5. Line of lowest depth along a river or ocean

6. Hollow and cylindrical inside of a breaking wave

7. Rise and fall of the sea level

8. Effect of large waves eroding a beach

9. Rising and falling of waves

9. Riding ocean waves on a board

10. Sound and spray created by an object hitting the water

11. Lowest point of a wave

12. Highest point of a wave

13. Large and powerful breaking wave

14. Fine spray of water

15. Mist of water lifted by the wind

16. Standing wave in an enclosed body of water

17. Small wave or series of waves

18. Temporary period of calm between waves

19. Sudden and steep descent of water

20. Sudden and strong movement of water