Thousand Islands Border Crossing and Canada border stations are located at the opposite ends of this span. The crossing is the westernmost of the three on the St. Lawrence River and is very busy, with up to two hours of waits during the summer. The US border station of Alexandria Bay has sometimes been called "Thousand Islands", and the Canada border station of Lansdowne has sometimes been called "Gananoque", named for the nearby town where international ferry service has historically (and continues to be) provided. These border stations are also responsible for inspecting vessel traffic between the two countries. The US has seasonal vessel
North American river otter openings in the ice, and may excavate passages in beaver dams for accessing open water. North American river otters are highly mobile and have the capacity of traveling up to in one day. Daily movements of yearling males and females in Idaho averaged in spring, in summer, and in autumn, respectively. Daily movements of family groups averaged in spring, summer, and winter, respectively. Both males and family groups travel drastically less during winter. North American river otters are renowned for their sense of play. Otter play mostly consists of wrestling with conspecifics. Chasing is also a common game. North American