Scientific Implications of the Comprehensive Skeletal Discovery of the Extinct Dokdo Sea Lion (Zalophus japonicus) from Ulleungdo, Korea
摘要
The Dokdo sea lion (Zalophus japonicus), once widespread across Japan, the Korean Peninsula, and parts of Russia, went extinct by the mid-twentieth century. We report a nearly complete skeleton recovered from Gajae-cave on Ulleungdo, Korea, representing the most comprehensive physical record of the species from this region. High-resolution 3D scanning of bones was used to generate permanent digital models, ensuring long-term preservation and enabling global access for virtual analysis. These materials support comparative anatomy, functional morphology, genetic research, and stable-isotope reconstructions of diet and ecological roles, while illuminating East Sea ecosystems and underscoring the need for continued excavations on Ulleungdo.