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impact analysis of a fill project underway at Hallandale in September 1979. 



Core samples at sand stations yielded 114 invertebrate species, not includ- 

 ing nemerteans and oligochaete annelids. More than 90 percent of the fauna 

 occurred at the two outer stations in densities of up to 17,144 individuals per 

 square meter. Quadrat samples of reef biota showed a maximum abundance and 

 diversity of corals, alcyonarians, and sponges in the middle and outer regions 

 of the second reef. The reefs appeared in good condition, and showed no appar- 

 ent effects from a 1971 beach nourishment project. 



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