Advanced Ocean-themed Crossword Puzzle
 
Listed Items
- 1.  A sea mammal with a dorsal fin and a beak-like snout
- 2.  The regular changes in the level of the sea
- 3.  It has a soft body with suction cups on its arms
- 4.  Small, pinkish-grey seafood
- 5.  Shell with 5-point star pattern
- 6.  aquatic animal that can be found in rivers, lakes, and oceans
- 7.  A natural rock formation in the ocean
- 8.  A large, intelligent marine mammal
- 9.  The large body of salt water that covers most of the Earth's surface