Across
- 5. animals who live in this zone never see sunlight
- 7. one of the main producers in the open ocean
- 12. one of the most important nutrients
- 13. harmful for animals to ingest
- 14. keystone species in the open ocean
- 15. ruining local fish stocks
Down
- 1. area away from the coastal boundaries and above seabed
- 2. largest animal in this ecosystem
- 3. the percentage of air the oceans produces for us to breathe
- 4. smallest organism in this ecosystem
- 6. absorbs solar energy to be used by animals
- 8. harmful for animals to get stuck in or consume
- 9. the percentage of ocean that covers Earth
- 10. the percentage of ocean explored
- 11. ultimate source of energy