<![CDATA[Coastal marine ecosystems contain diverse biological resources, including members of the class Holothuroidea (sea cucumbers), which have important ecological and economic value. However, information regarding the diversity and distribution patterns of Holothuroidea species in the coastal waters of Timor-Leste remains limited, particularly in the Beraka coastal area.This study aimed to identify the species composition and determine the distribution patterns of Holothuroidea in the coastal zone of Beraka Area, Hera Village, Kristu Rei Administrative Post, Díli Municipality.The research was conducted from December 2 to 5, 2022, using a field survey method with discontinuous plots and 10 × 10 m transects. The population consisted of all Holothuroidea individuals found in the study area. Data were analyzed qualitatively through species identification based on morphological characteristics and quantitatively using Morisita’s index of dispersion to determine species distribution patterns.The study identified three families and 11 species of Holothuroidea, comprising a total of 542 individuals. The identified families were Chiridotidae, Holothuriidae, and Synaptidae. The distribution analysis indicated a uniform distribution pattern, with a Morisita’s index value of 0.81, suggesting that the distribution of Holothuroidea was associated with relatively similar environmental conditions across the study area. The measured environmental parameters, including water temperature (27–30°C) and pH (7.5), were within ranges suitable for the survival of Holothuroidea species.The findings provide baseline information on Holothuroidea biodiversity in the Beraka coastal zone and highlight the importance of conserving and sustainably managing marine resources with ecological and economic value.]]>
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