Discover the incredible world of tardigrades, tiny creatures that defy the limits of life. These microscopic marvels, also known as water bears, measure just half a millimeter in length but boast near-indestructible resilience. From withstanding extreme temperatures of near absolute zero to above 300 degrees Fahrenheit, to tolerating pressures six times greater than the ocean's deepest trenches, their survival skills are awe-inspiring. In 2008, scientists took their durability to the ultimate test by exposing them to the vacuum of space, cosmic radiation, and the sun’s intense heat. Amazingly, many tardigrades survived these harsh conditions thanks to cryptobiosis, a state in which they dry out and halt their metabolism, becoming almost invincible. These extraordinary abilities make tardigrades one of the most fascinating creatures on Earth—and perhaps even beyond.
