Across
- 4. Intelligent marine mammal known for its playful behavior Octopus Cephalopod mollusk with eight tentacles
- 8. Empty shell found on the beach
- 9. Boat with sails powered by the wind
- 10. A moving swell or ridge on the surface of the water
- 11. Sandy or rocky shore along a body of water
Down
- 1. Marine invertebrates that form reefs
- 2. The rise and fall of the ocean's water levels
- 3. Gelatinous marine creature with tentacles
- 5. Vast body of saltwater covering most of the Earth's surface
- 6. Small crustacean with pincers and a hard shell
- 7. Aquatic animals with gills and fins
- 8. Marine plants that grow in the ocean
- 9. Large predatory fish with sharp teeth