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Lobster resources are one of renewable resources but if catches are increasing without any control will cause a depleted resource. Catching lobsters is not only in the adult phase but all phases are captured. The purpose of this study to determine the composition of lobster seeds between depths that have a high value of lobster seeds collection so that it can be used as a reference for lobster protection in nature. This research was conducted in January – February 2019, located in Pacitan district with the operational area in Wawaran beach waters. The statistical method used in this research was Chi-Square analysis and Kruskall-Wallis. Based on the results of the operation atracror puerulus lobster in two different depths (14 and 20 meters) in Wawaran beach waters found that there are four species puerulus, i.e., Panulirus homarus, Panulirus penicillatus, Panulirus ornatus and Panulirus versicolor. Its found that different depths did not affect the composition of the collected puerulus species. Then the Kruskal-Wallis test at 14 meters and 20 meters depth found a significant difference in the value of each type of lobster. The type of puerulus from Panulirus homarus has the dominant results compared than the other three species.

The differences of depth on the species composition of spiny lobster puerulus on south Pacitan Regency East Java