Workboat Passage is a shallow, dynamic saltwater strait separating Herschel Island-Qikiqtaruk from the mainland coast of Ivvavik National Park in the Yukon's Inuvialuit Settlement Region. This narrow passage, approximately 2 kilometers wide, serves as a vital travel route and ecological corridor in the western Arctic. The waters are notably shallow, generally less than 3 meters deep, and are influenced by strong longshore currents. The surrounding landscape is low-lying and treeless, characterized by spits, shoals, and gravel beaches, with the environment constantly reshaped by coastal erosion, ice, and the transport of driftwood from the Mackenzie River. The area holds profound cultural significance, with a long history of Inuvialuit use for seasonal hunting and fishing, evidenced by archaeological sites like those on Avadlek Spit. The passage lies within a complex jurisdictional area bordering a National Historic Site, a territorial park, and a national park, emphasizing its protected status.