en Biology & physiology Biology & physiology پژوهشي Orginal research papers <h1 style="margin-left:7px; text-align:justify"><span lang="TR" style="font-size:11.0pt"><span style="font-family:&quot;Times New Roman&quot;,serif"><span style="color:black">Certain species of sea cucumbers in Indonesia are valuable marine commodities, commonly traded globally in dried form (<i>trepang</i>). The diversity of <i>trepang </i>species with similar colors and patterns has led to confusion about the names of the species in the coastal areas. As part of ongoing efforts to mitigate false and conserve stock biodiversity, accurate identification of <i>trepang </i>is essential. This study aims to document <i>trepang </i>traded from East Kalimantan, based on their external morphology as well as ossicle shapes and composition. The observation of 24 specimens revealed fifteen species from the family <i>Holothuriidae </i>and five species from the family <i>Stichopodidae</i>.<span style="letter-spacing:-.1pt"> This study</span> recorded dried <i>Bohadschia marmorata</i>, <i>B. subrubra</i>, and <i>Stichopus quadrifasciatus </i>for the first time in East Kalimantan. </span></span></span><span lang="TR" style="font-size:11.0pt"><span style="font-family:&quot;Times New Roman&quot;,serif"><span style="color:black">Understanding these newly recorded commercial species in this region will help the local management authority compile species-specific trading data. Ossicles observation provides an effective method for identifying <i>trepang</i>, particularly in coastal areas where access to advanced laboratory facilities is limited. Therefore, we recommend ossicle examination as an important addition to the species identification of dried sea cucumbers, which are difficult to identify morphologically. This will support regulatory controls and clearance processes, as part of efforts to conserve biodiversity stocks for the sustainable use of sea cucumber species-specific.</span></span></span></h1> Dried sea cucumbers, Holothuroid, Trepang, Ossicle, East Kalimantan 433 453 http://jifro.ir/browse.php?a_code=A-10-5417-1&slc_lang=en&sid=1 T.S. Khatulistiani tiar007@brin.go.id 100319475328460058758 100319475328460058758 Yes Research Center for Pharmaceutical Ingredients and Traditional Medicine, National Research and Innovation Agency I. Wirawati ismi002@brin.go.id 100319475328460058759 100319475328460058759 No Research Centre for Oceanography, National Research and Innovation Agency A. Setyastuti anas004@brin.go.id 100319475328460058760 100319475328460058760 No Research Centre for Biosystematics and Evolution, National Research and Innovation Agency G. Patantis gint001@brin.go.id 100319475328460058762 100319475328460058762 No Research Centre for Marine and Land Bioindustry, National Research and Innovation Agency A.S. Dewi ariy008@brin.go.id 100319475328460058761 100319475328460058761 No Research Center for Pharmaceutical Ingredients and Traditional Medicine, National Research and Innovation Agency P. Pitriana pipi002@brin.go.id 100319475328460058763 100319475328460058763 No Research Centre for Biosystematics and Evolution, National Research and Innovation Agency H.P. Efendi Hettyefendi87@gmail.com 100319475328460058764 100319475328460058764 No Coastal and Marine Resources Management Center for Pontianak, Ministry of Marine Affairs and Fisheries, Indonesia S.I.T. Alkadrie borjaka1305@gmail.com 100319475328460058765 100319475328460058765 No Coastal and Marine Resources Management Center for Pontianak, Ministry of Marine Affairs and Fisheries, Indonesia