Scientists have uncovered a surprising new home for marine life: beneath the ocean floor! Using a robotic submersible called SuBastian, researchers explored an area in the eastern Pacific Ocean called the Fava Flow Suburbs. They discovered that animals like tubeworms and mussels are living in cavities under the seafloor, not just on the surface. This discovery changes what we thought we knew about life around deep-sea hydrothermal vents.

The team found these creatures by drilling small holes into lava rocks and lifting up lava shelves. They found cavities about 4 inches high, where the animals were living comfortably. The temperature inside the cavities was around 64°F (18°C), which is livable for these animals. The tubeworms and mussels get their nutrients from special bacteria that live inside them.

This finding is exciting for astrobiologists, who study the possibility of life beyond Earth. It shows that life can thrive in extreme environments, which helps us understand what kind of conditions might support life on other planets or moons. For example, Jupiter's icy moons Europa and Ganymede are thought to have subsurface oceans. The new discovery suggests that if there's life there, it might be hiding deep below the surface.

The research team also noted that we don't yet know how deep life can survive beneath the seafloor. More studies are needed to find out. They also emphasized the importance of protecting these undersea habitats from potential threats like deep-sea mining.

This isn't the first time the research vessel Falkor has made interesting discoveries. Last year, it found new hydrothermal vents and an octopus nursery. The vessel has also been part of studies that found microbes in the deep sea that our immune systems can't recognize.

The recent discovery under the ocean floor adds to our understanding of life in extreme conditions and how it might exist elsewhere in the universe. It's like finding new clues in a big cosmic puzzle!

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