FIGURES 



Figure F a g e 



1. Fouling Rack Location Chart 1 



2. Sketch of Biological Fouling Rack 3 



3. Biological Fouling Rack as Originally Constructed. . . 3 



4. Test Panel Insertion and Removal Schedule 4 



5. Sea Surface Temperatures. . . . , 7 



6. Sea Surface Salinities 7 



7. Total Wet Weight (in air) of Fouling 9 



8. Accumulated Wet Weight (in air) of Fouling 9 



9. Barnacle Fouling 10 



10. Colonial Hydroid Fouling 12 



11. Calcareous Tubeworm Fouling 14 



12. Encrusting Bryozoan Fouling 15 



13. Jingle Shell Fouling 17 



14. Exposure Periods and Predominant Fouling 

 Organisms Occurring on Monthly and Cumulative 



Test Panels 19 



15. Setting Periods of Predominant Attaching 



Organisms 21 



16. Jingle Shell Growth 21 



17. Calcareous Tubeworm Growth 22 



18. Panels Exposed for 1-Month Periods from April 



1956 to April 1957 27 



19. Panels Exposed for Periods Greater than One Month 

 from April 1956 to April 1957 29 



20. Panels Showing Growth Resulting from Exposure 

 Periods from 6 to 1 1 Months 31 



21. Close-up Views of Some Common Fouling Organisms 

 Occurring on Test Panels 33 



TABLE 



Table Page 



I. Fouling organisms observed and periods of 



attachment at the fouling test site 24 



