The boy was reported to be drifting on an ice floe about 20 feet from shore. The Customs and Border Protection team was conducting training in the area, and threw a rope to the boy to prevent him from drifting further. The Coast Guard picked him up shortly afterward.
Officials say the boy was wearing shorts and a T-shirt, since air temperatures were relatively warm. The water temperature was 34 degrees.
The boy was taken to a hospital as a precaution.