AI Insight
Scientists discovered wrinkle patterns typical of microbial mats in ancient Moroccan seafloor rocks that formed hundreds of feet below the ocean surface, far deeper than such structures were previously known to exist. These patterns, normally associated with photosynthetic microbes in shallow, sunlit waters, appear to have been created by chemosynthetic microbes that derive energy from chemical reactions rather than sunlight. The finding suggests that complex microbial ecosystems in the deep ocean were more extensive in Earth's ancient past than scientists had previously recognized.
Why it matters
This discovery expands our understanding of where life can thrive on Earth and potentially on other planets or moons with deep oceans but no sunlight. It also provides new insights into the diversity and distribution of early life forms during Earth's evolutionary history.
Understand the Science
Scientists exploring ancient seafloor rocks in Morocco discovered mysterious wrinkle patterns where they were never expected to occur. These structures are normally linked to microbial mats in shallow, sunlit waters, yet the rocks formed hundreds of feet below the surface in darkness. Evidence indicates that chemosynthetic microbes created the wrinkles, revealing that deep-ocean microbial ecosystems may have been more widespread than previously thought.
Source: Scientists stunned by signs of ancient life in a place no one expected