2. Let’s dive into the Lake Huron Sinkholes A NSF funded, NOAA (TBNMS, GLERL) & NOF supported study

4. Can you find the groundwater on the picture? Groundwater

5. El Cajon Bay

6. Mats are large groups of microbes, or microscopic organisms

7. Purple mat Grass Individual microbes Individual blades of grass

8. Middle Island WOW! That’s the size of a football field!

9. Hey, cool! I can see what the ROV is seeing on this computer! R.O.V. Remotely Operated Vehicle

11. ROV Footage

13. Diver Video of Middle Island

15. WOW!

16. M-ROVER Footage

17. Picture of a sinkhole Microbes at a sinkhole

18. Dr. Bopi Biddanda

19. Dr. Biddanda with a sample from a sinkhole Scientists studying the sinkholes

21. Energy Photosynthesis Energy Chemosynthesis

22. Plants use photosynthesis to make energy!

23. NO SUN NEEDED!

24. Photosynthesis Chemosynthesis

25. More Footage from our Adventure

27. A NSF funded, NOAA (TBNMS, GLERL) & NOF supported study Presentation assembled and narrated by Amanda Callaghan, 2008 Institutional Support: GVSU, UW- Stout, NOAA, Thunder Bay National Marine Sanctuary, and the Noble Odyssey Foundation Underwater Diver Photography: Russ Green, Luke Clyburn, and Tane Casserley Underwater ROV videos: Steve Ruberg and Guy Meadows Aerial Photography: Scott Kendall and Bopi Biddanda Research: Bopi Biddanda, Scott Kendall, and T. Garry Sanders