) 



SjBPTj? 



VL * 



-i 



A. AN ENCRUSTING BRYOZOAN (UPPER LEFT) 

 ENCROACHING ON A BARNACLE COMMUNITY 



B. COLONIAL HYDROIDS 



C. SOLITARY TUNICATE (CENTER) D. BARNACLES (SCALE IN INCHES) 



FIGURE 21. CLOSE-UP VIEWS OF SOME COMMON FOULING ORGANISMS OCCURRING ON TEST PANELS 



33 



