Animals

Animals That Can Survive Without Oxygen

Some animals can survive surprisingly long when oxygen is scarce—or even when it seems absent. This article explores how creatures like frogs, turtles, certain insects, and marine worms cope with low-oxygen environments, and what “without oxygen” actually means in biological terms. You’ll see why temperature, energy use, and metabolic slowdowns often decide who lives and for how long, and what scientists measure in the lab to confirm these abilities. The guide also includes practical checklists to help you evaluate bold claims you might see online, highlights common misunderstandings, and wraps up with a quick FAQ for health-conscious readers.