183 



Then the next question would be, how do you detect the differen 

 prior to the time you get a porpoise in your net, its variot;' 1 ancestry? 



Dr. White. My understanding, although Dr. Fox ean comment, is 

 that it is possible to detect the difference between various species of 

 porpoise. 



Mr. Leggett. T hope it is possible to detect the differences between 

 the various species of porpoise. The question is, how do you do it 

 while you are fishing? 



Dr. White. The captain presumably does it. He is experienced 

 with these things. Tie has been doing it for a long time. 



Mr. Leggett. Have you ever done it? 



Dr. White. No. 



Mr. Leggett. Have you got people in this room who have? 



Dr. White. There may be lots of people in this room who have 

 done it. 



Mr. Leggett. Tn the XOAA staff? 



Dr. "White. No. Not on our headquarters staff. 



Mr. Leggett. Has anybody on your staff heard how you do it? 



Dr. "White. "We have people in the field, Mr. Chairman. 



Mr. Leggett. All right, what is your understanding of how you 

 believe it is done from whatever source of information you have? 



Dr. "White. Well, I assume that the captain sights a school of 

 porpoises and can identify what kind of porpoises they are. He ran 

 identify whether it is a mixed school. He can identify several 

 species' because some of the species, for example the spinner, have 

 peculiar characteristics. He makes a judgment as to whether the 

 school is mixed and the regulations prohibit setting on it. 



If he finds, upon setting on a pure school that he has eastern 

 spinners and this is done accidentally, then you have a situation 

 where our enforcement policy 



Dr. "White. That is my understanding. 



Mr. Leggett. So if the captain is zapping along and somebody 

 up in the crow's nest says: Porpoise, ho!, or whatever he might say, 

 and you zap out the ski boats, and they start charging over and 

 captain is looking through his periscope or telescope, assuming he 

 does not see any prrhbuettes going on. why then, pretty soon, his 

 slave ship starts backing down and starts charging around to make 

 the quarter-mile encirclement and providing he completes the en- 

 circlement with no pirhouetting, why, then, presumptively, you are 

 not setting on a mixed school. 



Am I stating the case as you assumed from the information you 

 have available to you? 



Dr. "White. Yes; that sounds like it. 



Mr. Leggett. Then they start sucking in the bottom of the net 

 and they complete the purse, so you then arrive at a point where 

 say the purse is say. a few hundred yards across, and say you find 

 one or two pirhouetting, I would expect perhaps at that point that 

 might be an accidental number pursuant to the regulations and then 

 you complete the take, hopefully getting all of the porpoises, and 

 particularlv the pirhouetting ones, out of the net. 



At what point, what happens as you make this encirclement, if 

 you get it down to say 200 yards, and you have got the porpoises 

 collected, and vou find lots of pirhouetting going on, Dr. White? 



