Snapping turtles can hold their breath underwater for about 40 to 50 minutes under normal conditions

. However, during hibernation (or brumation), they can survive without breathing air for much longer-up to five and a half to six months. During this time, they rely on extrapulmonary respiration, absorbing oxygen through membranes in their mouth and throat or through a specialized cloacal air bubble, which allows gas exchange with the surrounding water

. In summary:

• Typical breath-holding underwater: 40 to 50 minutes
• During hibernation/brumation: up to 5.5 to 6 months without breathing air, using alternative oxygen absorption methods

This remarkable ability allows snapping turtles to stay submerged and survive in cold, oxygen-poor environments during winter months.