Lives in low-oxygen, high-carbon dioxide underground environments.
Exist near hydrothermal vents, reliant on bacteria for food.
Survives desert conditions by storing fat and water.
Adapts to freezing temperatures with thick fur and fat.
Lives in hydrothermal vents, tolerating extreme heat.
Endures the highest temperatures of any terrestrial animal globally.
Thrives in freezing temperatures of the Southern Ocean.
Microscopic, can survive extreme dehydration and radiation.