Life without oxygen, as we know, is impossible. Only certain bacteria can cope no oxygen conditions and no other organisms, especially we animals cannot survive it.
One of the the world’s strangest mammal, naked mole rat, can survive 18 minutes without oxygen. That’s just one of the naked mole-rat’s many bizarre abilities.
Ed Yong, The Atlantic
Oxygen makes up around 20 percent of the air around you. If it fell to 5 percent, you’d pass out after 3 minutes or so. Then, your brain would start to die. To fuel itself, this gas-guzzling organ requires a constant supply of sugar and oxygen—even when you’re not doing anything. Without the vital gas, ions flood across the barriers of neurons, causing internal havoc, and forcing them to self-destruct. “There’s probably more than a hundred things that will kill brain cells if you turn off the oxygen,” says Thomas Park, from the University of Illinois at Chicago.
Within minutes, you’d be dead. And hours after that, a naked mole-rat in the exact same conditions would be happily walking around—the picture of health. Imagine a disembodied index finger that’s been soaking in the bath for too long, and has teeth at the end. That’s a naked mole-rat. These weird rodents live in large underground colonies with nesting chambers the size of footballs. In these cramped subterranean quarters, oxygen levels often fall as low as 6 percent. And yet, these animals cope with this hypoxia.