ocean

3. It describes the rise and fall of the ocean's water levels due to the gravitational pull of the moon.
5. It's the area where the land meets the sea, usually with sand and rocks.
7. It's a tall tower with a bright light that warns ships of dangerous areas.
9. It's a plant-like algae that grows in the ocean and can be found washed up on the beach.
10. It's a small boat with sails used for sailing on the water.
11. It's an intelligent and playful marine mammal often seen swimming in groups.
12. It's a bird commonly found near the ocean, known for its loud calls.
13. It's a sandy or pebbly area by the ocean where you can swim and relax.

1. It's the hard, empty shell of a marine mollusk found on the beach.
2. It's a vertebrate animal that lives in water and has gills to breathe.
4. It's a large, moving swell or ridge of water in the ocean.
6. It's a sea creature with eight arms and a soft body, known for its intelligence.
8. It's a hard or soft, colorful structure formed by tiny marine animals.
9. It's a marine animal with a star-shaped body and usually five arms.
10. It's a hard, protective outer covering found on the beach.