Towering colonies of giant tubeworms, Riftia pachyptila, reign over deep-sea hydrothermal vents. They cluster where heat and sulfur spew into the sea, extending their feathery red gills to reach cooler, more oxygenated waters. The worms don’t have a gut and they don’t eat food. Instead, they host bacteria inside their bodies that convert minerals from the vents into energy. As volcanic activity deep below the seafloor shifts, the hot, mineral-rich water stops flowing. Eventually, the entire colo
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The world’s heaviest worms thrive in an extreme environment. 🔥✨⁠ ⁠ Towering colonies of giant tubeworms (Riftia pachyptila) grow where hot, mineral-laden water flows out of the deep seafloor. Unlike most animals, they don’t eat; instead, bacteria living in their guts transform sulfur into energy for them.⁠ ⁠ As harsh as their environment is, giant tubeworms live surrounded by a community of other animals—and their size doesn’t necessarily protect them. Their gills, which resemble foot-long red
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It was once believed that only microbes and viruses inhabited the subseafloor crust beneath hydrothermal vents. Yet, on the seafloor, animals like the giant tubeworm Riftia pachyptila thrive. Their larvae are thought to disperse in the water column, despite never being observed there. In 2023, #VentUnderworld Chief Scientist Dr. Monika Bright and an international team of scientists on R/V Falkor (too) suspected that ecosystems existed beneath the seafloor, and water being sucked into and pumped
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