Group 1 - The Canadian military and possibly the coast guard are closely monitoring the Chinese research vessel "Xuelong 2," which has appeared in the Arctic waters near Alaska for the second consecutive year [1][2] - A CP-140 reconnaissance aircraft from the Canadian Air Force was reported to be flying near "Xuelong 2" as it left the Bering Strait on the 20th of this month, although the Canadian Department of National Defence did not confirm the aircraft's presence [1] - The Canadian military stated that they will continue necessary activities to detect, deter, and defend against potential threats within and near Canadian territory, emphasizing that "Xuelong 2" is not currently in Canadian territorial waters [1] Group 2 - The Canadian Coast Guard was reported to have been following "Xuelong 2" until it crossed the Bering Strait, but initially provided vague responses regarding their mission [2] - The Coast Guard later denied monitoring "Xuelong 2," claiming their focus was on the migration routes of key species like Pacific salmon, despite data showing only one-third of the vessel's recent journey aligned with known salmon migration paths [2] - An expert from Beijing Foreign Studies University noted that Canada seems reluctant to disclose details about the incident, suggesting that the monitoring activities are essentially harassment of civilian vessels, and emphasized that China's research activities comply with international maritime law [2]