Full title reads: "Toronto. 173 men and 1 woman compete for World's richest swimming prize - 19 year old Marvin Nelson won in record time."
CUs of swimmers before the race. They are all covered with fat / lard to help them keep warm in the cold water.
The swimmers dive in to the water and start swimming in the waters of what looks like Toronto harbour. Shots of swimmers being followed by rowing boat.
CU of swimmer in bath robe at end of race - presumably Marvin Nelson the winner.