Across
- 4. Dirty water
- 9. Digests algae caught in the gills
- 11. They have really small shells
- 12. Sorts and transfers food from the gills to the digestive tract
- 13. Help fish breath underwater
- 16. occur when rising water is pushed onto land, causing flooding
- 20. pump water through their bodies, filtering out algae and bacteria to eat
- 21. This means to be underwater
- 22. Skin-like covering that protects the oyster’s organs
- 23. Like a clam
- 24. blocking waves that can wash away sand and soil
- 25. Holds the two halves of the oyster’s shell together
Down
- 1. Pumps the oyster’s blood
- 2. A food that is rare and good
- 3. means they’re vital to their ecosystem
- 5. Opens and closes the shell
- 6. Means where they live is gone now
- 7. Pulling up a cage that has been submerged under water
- 8. Protects the animal so it wont get hurt
- 10. these animals’ soft bodies are protected inside closed shells.
- 14. to measure the growth of the mollusks
- 15. Habitats on our planet
- 17. When you harvest to much
- 18. a community of organisms interacting with their nonliving environment
- 19. provide homes for other creatures, protect coastlines, and keep waters clean