Invertebrates
Pompeii Worm
Alvinella pompejana · also called pompeii tubeworm
Living with its head in cool water and its tail end pressed against surfaces exceeding 80 degrees Celsius, a Pompeii worm tolerates one of the widest temperature ranges of any animal known to science, sheltering inside papery tubes built directly onto scalding hydrothermal vent chimneys.
Overview
The Pompeii worm, Alvinella pompejana, is a heat-tolerant invertebrate native to hydrothermal vent habitat recorded along the East Pacific Rise. Its extraordinary tolerance for extreme temperature gradients, fleece-like coating of symbiotic bacteria, and status as a leading subject of extremophile research make it one of the most biologically extreme animals found anywhere in the ocean.
A body built to bridge two extremes
Few animals experience such a dramatic temperature difference across their own bodies as the Pompeii worm, which lives with one end tolerating near-scalding vent water while the other remains in far cooler surrounding seawater, a balancing act that has made it a prime subject for scientists studying the outer limits of life.
Status
Not Evaluated, known only from a limited number of naturally patchy hydrothermal vent sites now of interest for deep-sea mining.
Pompeii Worm: common questions
How hot can the water be where a Pompeii worm lives?
This species can survive with its head in relatively cool water while its tail end sits in water exceeding 80 degrees Celsius, one of the widest temperature tolerances documented in any known animal.
Why is it called the Pompeii worm?
This species is named after the Roman city of Pompeii, famously destroyed by the eruption of Mount Vesuvius, a reference to the worm's extraordinary ability to survive prolonged exposure to extreme heat near active hydrothermal vents.
What is the fleece-like coating on a Pompeii worm's back?
This species has a fleece-like coating of bacteria living on its back, a relationship thought to provide the worm with some combination of insulation and nutrition in exchange for a stable place to live.
Why are scientists so interested in the Pompeii worm?
This species is closely studied for extremophile biology, since enzymes and proteins that remain stable at such extreme temperatures have potential applications in biotechnology, alongside broader scientific interest in how any animal survives such conditions at all.