Figure 5. Portable continental shelf laboratory. 
Figure 6. School of grunt with background 
of staghorn coral. These fish are edible but 
are not commercially fished; they may have 
potential as food supply. A portable labora- 
tory would allow a detailed study of the 
species. (Photo by Bates W. Littlehales, © 
National Geographic Society) 
VI-227 
