An 11-year-old boy plunged through ice and into Clear Lake but was rescued by a 10-year-old friend who inched out and pulled him from the water.
Clear Lake police say the boys, whose names weren't released, were walking on the northern Iowa lake Friday when they approached an aerator, which keeps part of the lake from freezing to prevent fish kills.
As they neared the open water, the ice gave way and one boy plunged into the lake, though he threw out his arms and managed to stay above water.
Police say the other boy slid toward him and managed to pull him back onto the ice.
The wet boy wasn't injured, but people on shore took the boys into a warm room and wrapped the cold boy in blankets.