Marine Biodiversity in Japanese Waters

A groundbreaking study estimates that Japanese waters host at least 155,542 marine species, with over 70% remaining undescribed. This includes 39 introduced species and a vast number of inconspicuous or smaller taxa that are poorly understood. The research compiles data on species richness, endemism, and the state of knowledge across diverse environments—from coral reefs to hydrothermal vents—highlighting significant gaps in our understanding despite Japan's advanced marine research capabilities. Positioned strategically with a vast Exclusive Economic Zone (EEZ), Japan's unique geographic and ecological settings make it a critical hub for studying global marine biodiversity, especially amid the looming threats of climate change.

Fujikura, K., Lindsay, D., Kitazato, H., Nishida, S., & Shirayama, Y. (2010). Marine Biodiversity in Japanese Waters. PLoS ONE, 5(8), e11836. https://doi.org/10.1371/journal.pone.0011836