Abstract
Fish have been known to aggregate and school around rocky outcroppings, deployed ships and concrete blocks. One of the reasons of the fish abundance have been considered to be the underwater sound. This paper deals with the underwater acoustics generated by the fish aggregation devices through the laboratory tests. The acoustic pressure measured in the tank tests and analyzed by the spectrum estimator. The results indicate that the underwater sound generated by the fish habitat seemed to be a very important parameter for the attraction to the marine fish.
