Diving lizard creates its own oxygen pockets
Lizards in Costa Rica may have evolved a technique to recycle their own air using bubbles that form on their heads as they hide from predators underwater. These lizards often dive into nearby water sources in response to threats and stay submerged until danger passes. The lizards manage to stay underwater for as long as 16 minutes. They exhale air bubbles that stick to the top of their heads before re-inhaling the air — essentially recycling it.