Gilmore Thalarectos D 1931 June 19 - South Side of St. Lawrence Is., Bering Sea, Alaska 10 miles off land. This morning about 10:30 A.M., we overtook a polar bear cub (half grown) swimming in the water and followed it up with the ship. It swam steadily thru the water in between the ice cakes and when a small shatter piece of ice was in the way it gracefully dove underneath. It swam almost entirely with its fore legs with occasional speeded kicks with its four hind feet. As we came upon it the first time it veered suddenly to one side and gained about 100 yds on us before the ship could be swung about. Again we approached it and soon it was directly under the bow. This time it swung to one side, and climbing nearly upon a cake of ice, lumbered off across it and dove heading off the other side. Here the chase ended and we resumed our way. It uttered no sound throughout the entire pursuit.