1. The Benthic Zone
Chapter 7
Oceans

2. What adaptations have organisms made to survive in the deepest, darkest parts of the ocean?

3. Adaptations Extremely high pressure No sunlight
Bioluminescence- create light through a chemical process (i.e. firefly in PA)
Large teeth, skulls, & stomachs

4. Fangtooth Fish

5. Why do you think bioluminescence occurs?

6. Light Fish

7. Bioluminescence Find food Attract prey Defend against predators
Communication
Find mates

8. How does it work? Luciferase enzyme reacts with the chemical luciferin
3rd element present (depending on organism (i.e. ATP, calcium, etc)
Luciferin + Luciferase + Oxygen + Salt  Light + Water

9. Angler Fish

10. Other Adaptations Pressure- 3000-9000 pounds/square inch! No sunlight
Large teeth, skulls, & stomachs- scientists are still unsure of why organisms have these characteristics

11. Giant Squid

12. Dragon Fish

13. Gulper Eel

14. Giant Isopod

15. Long-nosed chimaera

16. Explain different adaptations organisms made to survive in the deepest, darkest parts of the ocean.