Seoul Bans Cicada Nymph Foraging Along Hangang River

Along the narrow waterways of Yeouido Saetgang Ecological Park, a green refuge on the southern edge of one of Seoul's most densely developed financial districts, a quiet but telling administrative intervention has taken shape. The Seoul Metropolitan Government has installed warning banners—written in both Korean and Chinese—instructing visitors not to collect cicada nymphs or other insects without explicit permission. The move, confirmed by city officials in mid-August 2026, follows a wave of civil complaints filed last summer alleging that groups of individuals, described as Chinese nationals, were systematically harvesting large quantities of cicada nymphs during evening hours.

Seoul Bans Cicada Nymph Foraging Along Hangang River

Seoul, South Korea – August 22, 2026 — The development is a minor administrative action on its face, yet it offers a compelling lens through which to examine Seoul's evolving approach to urban ecological governance, the legal boundaries of public park use, and the cultural tensions that emerge when global migration intersects with local conservation norms. For a city that prides itself on reconciling dense urbanization with environmental stewardship, the cicada dispute represents a case study in how municipalities balance competing claims on shared green space.

From Civil Complaints to Administrative Action

The genesis of the city's response lies in the digital complaint infrastructure that has become a hallmark of Seoul's participatory governance. In July of last year, citizens filed grievances through the Seoul Metropolitan Government's online civil complaints portal, alleging that individuals believed to be Chinese nationals were visiting the Saetgang park in organized groups during summer evenings, carrying large containers, and collecting cicada nymphs in volumes far exceeding personal or recreational use. Witness accounts circulated on social media platforms, including Threads, with one user describing two individuals "who looked like foreigners filling these huge containers with something... it turned out to be cicadas. I couldn't believe it."

According to a city official who spoke to News1, while nymph collection was frequently reported last year, the city has received no similar complaints this year. The banners, the official explained, were installed as a precautionary measure rather than a response to ongoing violations. This distinction matters: it suggests the city is acting prospectively, seeking to codify norms before a problem re-escalates, rather than reacting to a current crisis. The official further noted that the restrictions are "particularly necessary at Saetgang Ecological Park, which provides a habitat for a variety of plants and animals and hosts nature observation programs for children. Indiscriminate insect collecting could disrupt the park's ecosystem."

The Legal Framework: A Fine of 100,000 Won

The legal basis for the ban derives from the Seoul Metropolitan Government Framework Ordinance on Conservation and Use of Hangang Park. Under this ordinance, unauthorized harvesting of insects or plants in areas under the city's jurisdiction carries a fine of up to 100,000 won—approximately $72. The penalty is modest, but its symbolic weight is considerable. It signals that the city views the collection of cicada nymphs not as a trivial childhood pastime but as an act of resource extraction that requires regulatory oversight.

It is important to note, however, that cicadas are neither endangered nor endemic to South Korea. They are not protected under laws governing natural monuments or endangered wildlife, meaning they can generally be caught outside protected areas. The legal constraint is therefore spatial and administrative rather than species-based. The city is not declaring war on cicada harvesting per se; it is asserting managerial authority over a specific, ecologically sensitive zone. This is a crucial distinction for understanding the limits of the ordinance and the nature of the city's intervention.

Food Culture and the Zhiliaohou Phenomenon

To understand why this issue has generated such attention, one must consider the cultural context of cicada consumption. In China's Shandong and Henan provinces, cicada nymphs—known as zhiliaohou—are a popular summer delicacy, typically deep-fried until crisp and seasoned with salt and pepper. The practice is deeply embedded in regional food culture, and the seasonal emergence of cicadas triggers a harvest that is both commercial and communal. In parts of China and Southeast Asia, eating cicadas and their nymphs is a normalized aspect of summer dining, although large-scale collection for food is uncommon in South Korea.

This cultural divergence creates a potential flashpoint. What is a delicacy in one context can appear as inexplicable resource extraction in another. The complaints filed in Seoul last year, and the online discourse that followed, reflect a degree of cultural friction—a sense among some Seoul residents that the park's ecological resources were being exploited by outsiders who did not share local norms of park stewardship. The city's decision to write the warning banners in both Korean and Chinese is a tacit acknowledgment of this demographic dimension, even as officials have been careful to frame the issue in ecological rather than ethnic terms.

Broader Patterns: From Seoul to Busan

The Saetgang case is not isolated. Similar reports emerged last year from an ecological park in Busan, where individuals were reported to have collected cicada nymphs in large quantities. The recurrence of these reports across multiple metropolitan areas suggests a pattern that extends beyond any single park or jurisdiction. It also points to the emergence of a secondary market for cicada shells: on South Korea's secondhand marketplace Karrot, 100 shells were listed for 3,000 won (about $2.10), described as "collected straight from nature... great for decorating or for kids to use to learn about nature."

This commercial dimension complicates the narrative. While some collection is undoubtedly for personal consumption, the presence of listings on a mainstream secondhand platform indicates that cicada shells and nymphs have acquired commodity value in South Korea as well. The city's plan to increase patrols around the park and impose fines on those who fail to comply with warnings is therefore aimed not only at preventing ecological disruption but also at curbing what officials perceive as unauthorized commercial activity within a protected public space.

Urban Ecological Governance in a Global City

From an academic perspective, the Seoul cicada case exemplifies the challenges of managing urban green spaces in an era of heightened mobility and cultural exchange. Seoul's parks are not merely recreational amenities; they are ecological assets that require active stewardship. The Framework Ordinance on Conservation and Use of Hangang Park represents a broader trend in Korean urban governance toward codifying the rules of engagement for public natural spaces. The ordinance's existence, and the city's willingness to enforce it, reflects a maturation of Seoul's environmental policy framework—one that recognizes the need to protect biodiversity even in highly developed urban corridors.

Yet the case also raises questions about the limits of municipal authority and the ethics of cultural policing. By targeting a practice associated with a specific national group, the city risks reinforcing ethnic stereotypes even as it pursues legitimate conservation goals. The official framing—emphasizing ecological disruption rather than cultural transgression—is a deliberate attempt to depoliticize the issue. Whether that framing will hold as the summer season progresses and patrols increase remains an open question.

Implications for Northeast Asian Cultural Exchange

On a broader level, the cicada dispute offers a microcosm of the cultural negotiations that characterize Northeast Asian relations. Food culture, migration, and environmental ethics intersect in ways that defy simple policy solutions. The Chinese practice of consuming zhiliaohou is not inherently incompatible with Korean conservation norms; the conflict arises when practices developed in one ecological context are transplanted to another without adaptation. The Seoul Metropolitan Government's response—a modest fine, informational banners, and increased patrols—represents a middle path between prohibition and laissez-faire, one that seeks to educate rather than punish.

As Seoul continues to position itself as a global city, it will increasingly encounter such moments of cultural friction. The cicada case is a reminder that urban governance is not merely a matter of infrastructure and zoning but also of negotiating the diverse practices and expectations of a transnational populace. The city's measured response—neither ignoring the complaints nor escalating into punitive action—offers a template for how municipalities might handle similar disputes in the future. Whether it proves effective will depend on the willingness of all parties to respect the shared space that the park represents.

By Prof. David Park, Staff Writer

This article was produced with AI-assisted research and editorial support. Reporting is based on sources cited in the article.