The Pompeii worm is the most heat-tolerant multicellular creature, able to withstand temperatures above 176 degrees Fahrenheit (80 degrees Celsius). Until the Pompeii worm was discovered in the 1980s near the Galápagos Islands, common belief held that only single-celled organisms could withstand extreme heat. Pompeii worms can grow up to 5 inches (13 cm), and live in small tubes near hydrothermal vents on the seafloor. These vents are located in subduction zones, where one tectonic plate moves away from another, allowing cold seawater to meet hot magma in the resulting open fissures.
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