1. A plant-like organism that grows in the sea

1. A common seabird found near coasts and oceans

2. A heavy object attached to a rope or chain, used to keep a ship from drifting

3. A vast body of saltwater that covers most of the Earth's surface

4. A series of metal links connected together

5. A structure built along the shore or bank, used for loading and unloading ships

6. To secure a ship or boat in a particular place with ropes or anchors

7. To overturn or cause to overturn in water

8. The branch of a nation's armed forces that conducts military operations at sea

9. A floating object used as a navigation marker

9. A gentle wind

10. The alternate rising and falling of the sea, usually twice in each lunar day

11. A long journey, especially by sea or in space

12. To plunge into water headfirst

13. To move through water using one's body or limbs

14. The wheel or tiller controlling the direction of a ship

15. A specially designed harbor with moorings for small boats and yachts

16. A piece of land surrounded by water

17. A ridge or swell moving across the surface of water

18. To rest or move continuously on the surface of a liquid

19. A small powerful boat used for towing or pushing larger vessels

20. A fastening made by tying a piece of string, rope, or cord