Sentence: "The Pacific Ocean lies to the west of North America, the Atlantic Ocean to the east, and the Arctic Ocean to the north; the United States has coastlines on all three."
The U.S. is one of the few nations with coastline on three oceans (along with Canada and Russia). This geographic position influences climate, trade routes, naval strategy, biodiversity, and cultural identity across the continent.
The only U.S. state touching two oceans is Alaska (Pacific and Arctic). The contiguous U.S. touches only the Pacific and Atlantic (via Gulf of Mexico).