The International Union for Conservation of Nature has updated its Red List of Threatened Species, moving the dugong that dwell in waters off Okinawa Prefecture to the critically endangered category and putting it a step away from extinction.

The organization warned that the number of dugongs off Okinawa has fallen to 10 or less and is in decline. The critically endangered category is the highest among the IUCN’s five categories, reflecting a high degree of extinction risk.

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