The wooden panels, riddled with marine borers, were soaked in an alcohol 

 solution to prevent decay and were placed in plastic bags. The wooden panels used 

 for fungi determination were placed directly into sterile plastic bags, sealed, and 

 stored in the ship's refrigerator. Rope specimens for the isolation of marine micro- 

 organisms were also placed in sterile plastic bags and stored In a refrigerator. In 

 order to determine moisture absorption, the 3-foot-long plastic rods and tubes and 

 other plastic materials were placed in plastic bags and sealed to retain any moisture 

 present in the plastics. 



Marine Growth on Test Materials 



Metal Panels . Generally there was very little fouling growth on the metal 

 panels. Species of deep-sea hydroids (Figure 8), including tubularia and sponges 

 (Figure 9), were the major attachment organisms found on test panels. Generally, 

 moderate amounts of hydroid growth were found attached to the surface of monel 

 and stainless steel panels, which were not covered with corrosion products. Very 

 little or no hydroid growth was evidenced on panels of mild steel and panels of 

 copper base alloys, which were covered with corrosion products. 



Figure 6. Various kinds of materials assembled in bio-racks before 

 exposure. 



15 



