how far can you see across ocean?
On a clear day, though, a person standing at sea level can see a little less than three miles across the ocean. You can see farther if you go higherâat the highest altitude on Little Diomede (919 feet), you can see for about 37 miles. (Between mid-December and mid-June, when the water between the two islands freezes, an intrepid explorer can just walk from one to the other.)