How Long Can Turtles Hold Their Breath. The marker for brain damage, s100b, rose in seven of the nine. Sea turtles, for example, can remain underwater for four to seven hours at rest.
No turtles have gills, right? Most turtles are able to hold their breath for 20 to 30 minutes, but the amount of time can be drastically influenced by factors like the temperature of the water, the metabolic rate, and the species of the turtle. Loggerhead sea turtles can hold their breath for the longest.