210 



Mr. Len^ton, Thank you. 



Mr. Waller. This is the habitat you saw earlier as it appeared under 

 the bottom. This shows some of the reef area immediately surrounding 

 the habitat and some of the very abundant and colorful marine life. 



More of the same. 



This is in essence the way we went to work every morning and this 

 shot of myself and John Van Derwalker is where we put our suits on 

 and our tanks just prior to departing down through the access hatch 

 immediately in back of us. 



After going through the access hatch, there is a small tunnel through 

 which you must go to get to the outside and this shows the shark cage 

 we passed in and out of when going from the habitat out into the 

 working area. 



A scene showing two of the divers on their way to work at one of the 

 many projects we had scattered around the reef area. 



These were very strange working conditions. We simply picked out 

 a piece of coral on the bottom and sat down and made our observations 

 and took our notes, and recorded our data. All quite different from the 

 way you normally do things, say at a shoreside laboratory. 



In this scene I think Ed Clifton is busy charting and mapping some 

 of the coral formations and geological features of the surrounding area. 



This shows one of Ed's experiments. The greatest value of Tektite 

 or any underwater house to a scientist is that you are not restricted to 

 taking the data point and then depending on that as being entirely 

 representative. 



By being down there, by having the scientist in the environment 

 himself, he can study the processes and changes that you normally 

 only get by taking measurements from surface ships. 



In this particular shot he has put some fluorescent sand around a 

 reference stake and was able to go out day to day and even hour-to- 

 hour to determine how much the marked sand had spread and how 

 the currents in the area were affecting this tagged sand. 



These are spiny lobsters, a delicacy in many parts of the tropics. 

 During Tektite John Van Derwalker subjected these animals to one 

 of the most intense studies I think that has ever been done in such a 

 short time. 



They were very abundant in the area around the habitat and since 

 so little is known of their reproductive behavior, their migration and 

 other life habits, Tektite offered an amazing and wonderful oppor- 

 tunity to study these things. 



John would go out with help from one or the other of us each day 

 and capture the lobsters and then record pertinent information on the 

 sex, the size, and other biological information on the lobster, and while 

 the two of them were sitting down on the bottom they could take the 

 measurements and also affix small tags shown here so that any time 

 that lobster was seen from then on he could be immediately identified 

 and his movements from the time he was first captured could be 

 recorded. 



Another method of determining the movements of the lobsters was 

 with a sonic tag. 



In this scene you will see a small device on the lobster. This device 

 emitted a very high frequency beat or tone and after the lobsters were 

 tagged like this they were released back to their burrows and with 



