Trepang are a term used for members of the sea cucumber (Holothuroidea) which is commonly used as a commodity. Indonesia has a high diversity of trepang, one of the regions that is a producer of sea cucumbers is Maluku. The purpose of this study was to determine the community structure of trepang in Namtabung, Selaru Island, Tanimbar Islands. This research was conducted using the 5x5 m² quadratic transect method at 3 stations. Species identification using morphological character. There are 95 individuals consisting of 14 species.  Density of trepang at location 0.42 m^-2 with highest density represented by Bohadscia marmorata with 0.12 m^-2. The Shannon index calculation results show moderate sea cucumber diversity, the Shimpson dominance index calculation shows no dominance, and the Shannon evenness index shows almost even distribution of each species.

Trepang, community analysis, diversity