via earthtimes.org
World turtle day...I like that idea!! Turtles and tortoises are some of the most ancient species alive on the earth today. Sadly, almost half of all their species are endangered. They are migratory and frequently get caught in fishing lines and drown. Turtles breathe air, so if they can't get back to the surface they drown. They can "hold their breath" for a long time, to do some deep underwater swimming, but they eventually have to breathe air.
So this is an approximation, but in active mode they can stay underwater about 30-40 minutes, in sleep mode about 2 hours and in hibernation mode (where their body systems are pretty much shut down) for months.
Pretty amazing species.
How do turtles communicate? With a shell phone.
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