214 



Mr. Pollock. Now, wc have another picture of this same pneumatic 

 pate witli aixain the i)orpoises on the top to swim out and down here 

 the tuna and over here we liave some simulators to simulate the killer 

 whale. 



The intent of this is to frighten the porpoises and to scare them oft. 

 Attain, there is some mixed success. 



What happens oftentimes is this will cause them to panic and run 

 and if the pneumatic gate doesn't work correctly they will run into 

 the net. 



This is one of a series of experiments that we have underway. 



I have two other pictures here which wall demonstrate the purse 

 seine net when it is out or when it is being drawn into the vessel and 

 this will demonstrate a combination of things. 



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Mr. Pollock. The portion of the net which is black at the back end 

 of the net is called a Medina strip. It is a smaller mesh than the 

 ordinary net. 



I have a sample if I might show the committee. 



Generally, the net used in taking the tima is a relatively large mesh, 

 about 4 inches. This is measured by the stretching amount of the net. 

 The next picture shows that as a net is brought into the vessel there is 

 a combination of things that happen here. 



Mr. Pollock. I should show the Medina net wliich is identified as a 

 2-inch mesh, very small. The purjx)se of this is to keep the porpoises 

 from getting their noses caught in the net. They can get caught in the 

 normal type of net and if they do, they drown. 



There is a little bit larger mesh net, 5-inch width which is down at 

 the bottom so that trash fish and other things can go on through the net. 



The experiment by people in the industry of using the so-called 



