Recent reports of endangered otters being spotted in urban rivers have sparked an unexpected debate in South Korea, particularly among fishermen who claim that otters threaten local fish populations. Some fishermen have even suggested designating the otter as a 'harmful species' due to its impact on bait fish, expressing their grievances in online communities. This has resulted in significant division among residents, with otter supporters challenging these claims, arguing that the harm caused by otters is overstated and that such species should not be classified as harmful solely based on their competition for resources.

The otter was designated as a national natural monument in 1982 and has been protected as a first-grade endangered species since 2012. Despite the increased reports of otter sightings in urban settings, assessing the true population size of otters remains difficult due to the high costs associated with conducting precise surveys of endangered species. Experts note that effective management of these populations requires substantial funding, which is a challenge given the large number of endangered species in South Korea. The National Institute of Ecology has indicated that population increases due to factors such as reduced roadkill and expanded habitats may warrant a reassessment of the otter's endangered status.

The government is currently considering downgrading the otter's classification from a first-grade to a second-grade endangered species, citing indicators of population recovery. However, this proposal has stirred further public discussion about the balance between preserving endangered species and managing their impact on local fisheries. As debates continue, the government will need to navigate the complex interplay between ecological protection and community concerns, which will require careful consideration and potentially a reevaluation of conservation strategies in urban environments.