Indonesia's Sea Cucumber Producing Regions: A Geographic Guide to Species, Habitat, and Sourcing Potential

Indonesia is not one sea cucumber fishery. It is dozens of them, spread across an archipelago of more than 17,000 islands that spans nearly 5,000 kilometers from west to east, encompassing three of the world's six major biogeographic zones and supporting the most diverse marine ecosystems on the planet. Each region within this geography brings its own ecological conditions, its own species assemblages, its own harvesting traditions, and its own relationship with the regulatory frameworks that govern Indonesian sea cucumber trade.

Understanding the geographic dimension of Indonesian sea cucumber sourcing is not a matter of finding the best region. It is a matter of understanding what each region can offer, what ecological conditions shape the species found there, and what those conditions mean for the characteristics of the product that emerges from each location.

Why Geography Shapes Species Composition

The species of sea cucumber present in any given location in Indonesia are determined by a combination of substrate type, water temperature, depth profile, reef structure, and proximity to the nutrient dynamics of the Coral Triangle. These ecological variables do not distribute evenly across the archipelago.

A comprehensive study on the diversity, biometric distribution, and relationships of commercial sea cucumber species across Indonesia, published in Fisheries Research (Elsevier, 2024), documented populations across multiple regions including the Natuna-Riau archipelago, Lampung, Central Java, East Java, Maluku, and Papua, finding that species composition varied significantly across regions in ways that reflected the underlying ecological conditions of each location. This species-level geographic variation means that the product available from South Sulawesi processing facilities is not identical in species composition to product from Maluku or from Papua, even when traded under the same broad product category.

The ecological logic is straightforward. Shallow seagrass beds produce conditions suitable for Holothuria scabra, which favors silty-sandy substrates in warm, relatively calm coastal waters. Deep reef passes and lagoon floors produce conditions for Holothuria fuscogilva, which requires harder substrates and greater water circulation. High-biodiversity coral triangle environments support a wider diversity of species including Thelenota species that require complex reef topography. Understanding which ecological conditions characterize each producing region is foundational to understanding what species are realistically sourceable from that region.

South Sulawesi: The Historical Center of Indonesian Trepang Trade

South Sulawesi occupies a unique position in the history of Indonesian sea cucumber trade that no other region can claim. The trepang trade from Makassar to Chinese markets, which research published in PLOS ONE documented as operating for at least 300 years, originated here. The Bugis and Makassarese maritime communities who built the trepang trade routes extending from South Sulawesi to northern Australia and to Chinese merchant networks established the processing traditions, the grading systems, and the commercial relationships that shaped the Indonesian sea cucumber export industry as it exists today.

The contemporary production picture from South Sulawesi reflects both the depth of this heritage and the consequences of centuries of intensive harvesting. The Indonesian fisheries ministry reported that in 2021, South Sulawesi produced 588.5 metric tons of sea cucumber, making it the largest producing province in Indonesia by recorded volume. Data from the Sapuka Islands, historically one of the most significant harvesting areas in South Sulawesi, showed that total sea cucumber production had fallen to only 538.34 kilograms per year by 2022, a decline attributed to overfishing, habitat degradation, and changes in environmental conditions.

The contrast between the provincial total and the Sapuka Islands figure captures the geographic reality of contemporary South Sulawesi production: harvesting has progressively shifted from historically depleted near-shore grounds to more distant islands and deeper water areas where populations have had more protection from intensive harvesting. The Flores Sea island chains that extend between Sulawesi and Sumbawa remain active harvesting areas, with community-based conservation initiatives in some locations attempting to manage harvesting pressure through seasonal closures and access restrictions.

South Sulawesi's processing infrastructure is the most developed in Indonesia, reflecting the long history of commercial production in the region. Makassar and surrounding areas host processing facilities with established export relationships, experienced handling of CITES documentation, and accumulated knowledge of species-specific processing requirements developed over generations.

Maluku: Biodiversity at the Edge of the Coral Triangle

The Maluku archipelago sits at the eastern edge of the Coral Triangle, in waters where the ecological richness of the triangle's core transitions toward the biodiversity gradients of the Pacific. This geographic position produces marine environments of extraordinary species diversity, with sea cucumber communities that reflect the full range of commercial holothurian families present in Indonesian trade.

Research on sea cucumber diversity in the waters of Duroa Island, Tual City, in Southeast Maluku, published in Biodiversitas Journal of Biological Diversity (2023), documented a community structure that included multiple genera across both holothuriid and stichopodid families. The Banda Islands, historically associated with spice trade but also significant in the trepang trade networks that extended from Maluku to Makassar and onward to Chinese markets, support coral reef environments whose depth profiles and substrate diversity accommodate a wider range of commercial species than the shallower, more uniform coastal environments that characterize parts of South Sulawesi.

The Kei Islands and surrounding waters of Southeast Maluku have been documented in Indonesian fisheries research as significant production areas, with harvesting communities whose relationship to the sea cucumber trade extends across multiple generations. The utilization of sea cucumbers in Kaimana district, West Papua, documented in Oceanology and Limnology in Indonesia (LIPI, 2020), provides a window into the community-embedded nature of sea cucumber harvesting across the eastern Indonesian arc, where trepang collection remains an important component of coastal livelihood systems.

For sourcing operations, the Maluku region offers access to species diversity that reflects the ecological breadth of its reef and lagoon environments. The processing infrastructure in Maluku is less developed than in South Sulawesi, which means that product from this region more commonly moves through trading intermediaries before reaching export-capable processors, adding a link to the supply chain that has implications for traceability documentation.

Raja Ampat and West Papua: The Conservation-Production Interface

Raja Ampat is recognized as the global center of marine biodiversity. Raja Ampat is a series of archipelagos that occupies 4.6 million hectares in northern West Papua, Indonesia, and lies at the eastern edge of the Coral Triangle within the Indo-Pacific region. The underwater topography of Raja Ampat, with its mix of shallow reef flats, deep passes, and complex channel systems, creates habitat conditions for more marine species per unit area than any other location on Earth.

Research published in Biodiversitas Journal of Biological Diversity (2025) conducted the first quantitative ecological assessment of sea cucumber populations in the waters of Kapadiri Village, Raja Ampat, documenting a coastal area subjected to long-term harvesting without formal management regulations. The study, published in the same journal series that has documented sea cucumber communities across multiple Indonesian regions, provides baseline data for Raja Ampat that had not previously been available in the peer-reviewed literature.

The management context of Raja Ampat is distinctive among Indonesian sea cucumber producing regions. The Raja Ampat district has established a network of marine protected areas that covers a significant portion of its coastal waters, and community-based management systems, including traditional sasi closures that restrict harvesting to defined seasons, operate in parts of the archipelago. Research on the diversity of sea cucumbers in the intertidal zone within sasi conservation areas in Folley Village, East Misool district, Raja Ampat, documented in Biological Conservation (2021), represents one of the few peer-reviewed assessments of sea cucumber communities within a formal community conservation framework in Indonesian waters.

For supply chain operators, Raja Ampat's combination of extraordinary biodiversity and active conservation management creates a sourcing environment that is distinct from the more heavily exploited regions of western Indonesia. The species diversity available from Raja Ampat waters, combined with the conservation infrastructure that some communities have established, offers a context for traceable, documented sourcing that aligns with the sustainability requirements increasingly embedded in premium market procurement standards.

Eastern Nusa Tenggara: Connecting Sulawesi and Maluku Through the Lesser Sundas

The islands of Eastern Nusa Tenggara, stretching from Flores through Timor to the Alor archipelago, occupy a transitional marine zone between the Indian Ocean influence to the south and the Pacific Ocean systems to the north. The Flores Sea and Sawu Sea that border these islands support sea cucumber communities shaped by strong tidal flows, upwelling events, and the mixed-substrate habitats that characterize the inter-island channel systems of the Lesser Sundas.

Research conducted at the University of Nusa Cendana in Kupang, East Nusa Tenggara, cited in recent reviews of Indonesian sea cucumber diversity, has documented sea cucumber communities in waters that have historically contributed to the trepang trade through connections to the Makassar-based export networks. The Flores Sea island communities mentioned in research on community-based conservation in South Sulawesi's Flores Sea zone reflect the geographic continuity of harvesting activity across the political boundary between South Sulawesi and East Nusa Tenggara provinces.

The aquaculture development potential of Eastern Nusa Tenggara has been recognized in Indonesian fisheries policy documents, with the coastal environments of the region identified as suitable for Holothuria scabra grow-out operations. The species' preference for sandy and silty-sandy substrates in calm, shallow coastal waters is well-represented in the bay and lagoon environments that characterize parts of the Flores coast and the sheltered inter-island waters of the eastern Nusa Tenggara chain.

The Sangihe and Talaud Islands: The Northern Frontier

The Sangihe and Talaud island chains, stretching northward from North Sulawesi toward the Philippines, represent the northern frontier of Indonesian sea cucumber production. Research on sea cucumber cultivation in the Sangihe Islands, published in recent Indonesian fisheries literature, documents aquaculture development activities in a region where geography and community structure differ significantly from the more intensively studied southern production zones.

The marine environments of Sangihe and Talaud are influenced by the oceanographic dynamics of the western Pacific, with water temperatures, current patterns, and substrate types that support species assemblages somewhat different from those characterizing the Coral Triangle core. For supply chain operators, this northern zone represents a less-documented but potentially significant source of production as aquaculture development extends beyond the historically dominant South Sulawesi production base.

What Geographic Diversity Means for Sourcing

The geographic breadth of Indonesian sea cucumber production is simultaneously an asset and a complexity for supply chain operators. It is an asset because it means that Indonesia can supply a wider range of species, from a greater diversity of ecological environments, than any other single-country source in the global trade. The species profile of a lot sourced from South Sulawesi reflects different ecological conditions than one from Raja Ampat or from Maluku, and for sourcing operations that require specific species or specific ecological provenance, this diversity provides options that do not exist elsewhere.

The complexity arises because the supply chain connecting harvest communities in Maluku or Raja Ampat to export-capable processors in Makassar or Surabaya typically involves multiple intermediaries, each of which represents a potential break in traceability documentation. The most developed sourcing relationships in the Indonesian market are those built directly between export-capable processors and the harvesting communities or regional collectors whose product they handle, with documentation systems that maintain harvest origin information through each link in the chain.

Sepanjang's operational presence in Indonesian waters spans multiple producing regions, giving us direct engagement with the species diversity, harvesting conditions, and processing requirements that characterize Indonesia's geographic range of sea cucumber production. We welcome conversations with organizations whose sourcing requirements extend to specific species, specific regional origin, or specific ecological provenance documentation.

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Sepanjang — Indonesia's Specialty Ocean Products Co. Sourcing high-quality sea cucumber directly from Indonesian waters for over 20 years.