Surfacing to breathe would ruin the turtles’ subterfuge, so they hold their breath for long periods of time -- sometimes more than one hour. Hibernation Respiration Freshwater turtles from temperate latitudes must hibernate to survive the winter. read more
sea turtles can hold their breath for 4-7 hours while resting or sleeping. read more
Turtles can actually hold their breath up to 3 to 5 months. In the winter turtles hibernate under the waters mud. read more