The Oblong Otter Shell (Lutraria rhynchaena) is a species of large, elongated bivalve mollusk found primarily in intertidal and shallow subtidal sandy or muddy coastal areas of Southeast Asia. Known for its oblong, smooth shell, this clam is highly valued as a seafood delicacy and is commonly harvested for both local consumption and export. The top countries engaged in the fishing and aquaculture of the Oblong Otter Shell are Vietnam, China, and Thailand, where it is collected by hand or dredged from tidal flats. Vietnam, in particular, has developed significant aquaculture operations for this species, making it a leading exporter, while China and Thailand also contribute substantially to global production. The fishing industry for the Oblong Otter Shell supports coastal livelihoods but faces challenges related to overharvesting and habitat degradation, prompting some countries to implement sustainable management practices and promote aquaculture to ensure long-term viability.
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Data from FAO. 2025. Global Capture Production. In: Fisheries and Aquaculture.