RECOMMENDATIONS 



1. Perform additional experimental determinations on 

 oxygen consumption of siphonophore floats, especially dur- 

 ing gas production and with added chemical precursors of 

 the manufactured gas. 



2. Determine the effects of elevated pressures, with 

 tests conducted in small plastic and metal pressure cham- 

 bers now under design. 



3. Employ pressure chambers in an assessment of 

 bubble production by siphonophores and size of released 

 bubbles, with stepwise reduction in pressure through a 

 range of 40 to atmospheres (simulated vertical migration). 



ADMINISTRATIVE INFORMATION 



Work was performed under SR Oil 01 01, Task 0401 

 (NEL Z12051). The report covers work from November 

 1964 to August 1965 and was approved for publication 

 20 April 1966. 



The author gratefully acknowledges the encourage- 

 ment, advice, and material aid of Dr. E. G. Barham. 

 I. E. Davies, J. W. Wilton, and J. J. Blanchard have 

 provided invaluable service in work at sea. R. L. Capen 

 provided superior assistance in analytical and experimental 

 work both at sea and in the laboratory. 



