By the end of 2025 and again in January 2026, approximately 2,000 Chinese fishing vessels were spotted in the East China Sea, organized into tightly packed and coordinated formations. This unusual display has drawn the attention of analysts and regional governments, as highlighted by an investigation from Nikkei Asia, which includes video evidence based on AIS (Automatic Identification System) data and satellite imagery. These vessels were arranged in long parallel lines or in 'L' shapes, extending for hundreds of kilometers, indicating a highly orchestrated maritime presence.

The gatherings occurred during two distinct periods, around December and January, near the median line between China and Japan and close to their exclusive economic zones (EEZ). The images depict a substantial "floating wall" that significantly exceeds normal seasonal fishing activities. This strategic positioning has raised concerns about China's broader maritime tactics in the region, potentially indicating efforts to assert dominance over contested waters.

The implications of such formations are significant, as they not only showcase China's maritime capabilities but also disturb existing regional tensions, particularly with Japan. As discussions over territorial disputes in the East China Sea continue, this display of force through organized fishing fleets can be interpreted as a signal of China's intent to strengthen its claims and influence in these contested areas, necessitating further scrutiny from international observers and regional stakeholders.