Lake trout go deep, frogs go deep to avoid the lethal cold temperatures. Lake trout are still feeding, but just barely at 4 degrees. The water at the bottom of lakes is about 4 degrees, water is most dense at 4 degrees, and there is an inversion in the temperature profile in lakes as the water warms/cools. So, it probably found the frog down in the soft substrate.
Sweety - your actions in going to the mat to save a young man from a future dictated by an insane system rather than by his potential to be much more than the pigeon hole they're trying to stuff him into... this I believe is a much more effective way to achieve the goal you're after. Sometimes the smallest stones can cause the biggest ripples. Save the war paint for asshats on forums.