Figure 5 



Figure 4 



allowed scientists to conduct experimental field 

 recruitment, population dynamics, and community 

 communities that would have been impossible with 

 made possible through saturation techniques. He 

 that influence recruitment of fishes and inverte 

 of them important fisheries and food stocks, on 

 predators and grazers are excluded or allowed ac 

 have allowed extended study of the life historie 

 actions of the major structural agents on reefs, 

 The AEGIR, NOAA's mobile underwater habitat that 

 also is shown here (fig. 6). 



studies on reproduction, 

 organization of coral reef 

 out the extended diving time 

 re divers study the factors 

 brates (figs. 2, 3, 4), many 

 artificial reefs where large 

 cess. These facilities also 

 s, growth, and species inter- 

 corals and sponges (fig. 5). 

 will replace HYDROLAB in 1986, 



