He wouldn't swim much, since the water was too cold and he could develop potentially fatal hypothermia.
Still, Judie developed hypothermia filming the scene.
The fish - do they fall asleep, develop hypothermia?
Despite jogging alongside the sled to keep warm, Shannon developed hypothermia.
A frail, older adult in a 60-degree house after a power outage can develop mild hypothermia overnight.
While on a winter fishing trip in Washington, Eddie Bauer developed hypothermia.
Otters can develop hypothermia and die if their coats are fouled.
Back at home, Aidan starts to develop hypothermia, and his body is suddenly covered with bruises.
The birds get cold, develop hypothermia and eventually become too weak to find food or fly away.
Within moments of sitting down he feared he would develop hypothermia.