Across
- 2. hard outer shell that protects the soft bodies of coral polyps.
- 3. coral reefs that form circles.
- 6. reefs between deep ocean water and land.
- 8. places where animals or plants naturally live and grow.
- 10. small sea animals that form skeletons that are part of a coral reef.
Down
- 1. long, thin body parts on some animals that are used to grab or move.
- 4. long, round and hollow like a tube
- 5. coral reefs that start new land.
- 7. a relationship between 2 animals that is good for at least one of the animals.
- 9. a special underwater habitat.