TO: Platform Workers 



The Naval Ocean Systems Center is studying the distribution of whales, porpoises, 

 and seals and sea lions around oil and gas platforms. We would appreciate any 

 information on those animals which you have seen from the platforms. Your 

 information will help us to understand the populations, distributions and behavior 

 of these animals. 



People from the Naval Ocean Systems Center will come on the crew boats and inter- 

 view workers about their observations of whales, porpoises, and seals. These 

 Naval Ocean Systems Center people will also put posters out which will show how 

 to identify different types of these marine mammals. Beside the posters they 

 will put a box of cards. If you see a whale, porpoise, or seal, we would very 

 much appreciate it if you would fill out one of these cards. The Naval Ocean 

 Systems Center people will come back in two weeks and collect these cards and 

 ask some more questions about whether you saw any marine mammals in the past 

 two weeks and if you had any trouble filling out the sighting cards. 



We wery much appreciate your cooperation in this program. 



B-103 



