1 with the Canyon Assessment Study, which occurred in '78 and '79, and 



2 then we did more work in Lydonia Canyon from 1980 to '83. 



3 Basically these are five study areas that we did for canyon and 



4 slope. These are five study areas that we did for canyon and slope 



5 processes study. This is Lydonia Canyon up here. 



6 Now, in several instances I will be comparing the fauna in Lydonia 



7 Canyon to slope fauna. The slope fauna that I'm comparing it to is in 



8 this slope area here, which is between Hydrographer and Veatch Canyons. 



9 So, basically the things is not just to look at Lydonia Canyon fauna per 



10 se, but also to compare it to what may be common out on the slope. 



11 Basically we surveyed the fauna with photographic means, using 



12 camera sleds. Unfortunately this is not the camera sled we used in this 



13 study, but it's a camera sled we've been using. I grabbed the wrong 



14 slide. 



15 This camera sled is designed to be towed along right on the bottom 



16 of the sea floor, riding approximately half a meter above the sea floor. 



17 It is looking forward and slightly down with lighting coming from the 



18 side. 



19 What this gives you is this gives you very, very good, sharp 



20 pictures of the fauna in terms of corals, it gives you polyp structure, 



21 polyp arrangement, fin configuration on fish, so it's very helpful in 



22 terms of identifying some of the, particularly on the corals and that, 



23 some of the smaller sessile forms. 



24 Also, the type of resolution we get with this type of photography 



25 is a lot better than we were able to get with the bow cameras on Alvin. 



26 So our resolution in terms of the very small animals living on the sea 



27 surface, or the slightly translucent animals is much better with the 



28 camera system. 



29 This is named "Babs" and yes, it is for Barbara, but it stands for 



30 "Bad-assed Benthic Scientist." It was named on a cruise I was not out 



31 on and christened. They painted that on and that is not removable 



32 paint. 



33 Basically we did 16 camera tows in Lydonia Canyon. We also dove 



34 with Alvin and we did 17 Alvin dives in the canyon. A total of 114,742 



105 



