Depth (feet) 



18, 



920 



10, 



840 



10, 



350 



10, 



300 



( 



3760 



DIVE NO. 76 (ASCENDING ONLY) 



Euphausiid or crustacean. Visibility 

 70 to 80 feet. 



Ten small white flashes. 



One flash - none between 10, 800 and 

 10, 400. 



Four flashes. 



Six flashes. One 15- second duration 

 flash, 



92 70 Flare-up of flashes. Quantity increas- 



ing. Five or six of 30- second duration. 



9075 2 00- foot interval, none; then four to 



8830 five. One sustained big mass of light. 



Adequate to permit viewing of grating 



inside antechamber. 



8780 Strings of bioluminescence being broken 



up in burble. Too many to count. Four- 

 inch chain. Big points of 30- second 

 duration. Much suspended matter. 



8185 Continuous biolumine scent flashing. 



7990 Slight decrease. Water temperature, 



3. 5°C. 



7841 Short chain that appeared to be a fish 



with lights on. Many other small points. 



7495 String broken up. 



7 346 Increase. Double of amount at 8000 



feet. Full sky density. Some first 

 magnitude. 



7100 About same density. Several appear 



as three points in a cluster. 



6900 Increasing. No void periods. Full sky. 



38 



