Tadpoles

Apparently, a student of mine reached through a hole in the ice into the pond and grabbed 5 tadpoles (presumably bullfrog). I do not know what he used to reach into the 33 degree water -- and I don't want to. But the tadpoles were so sluggish that he could just grab them! (I didn't see this but his mom told me about it, so I trust it is not fabricated...)