Antarctic microbialites

Antarctic microbialites are layered structures formed by communities of microorganisms, mainly bacteria and algae, that precipitate minerals from their environment. These microbial communities create intricate, rock-like formations in cold, aquatic settings, especially around lakes and pools in Antarctica. Their presence indicates complex biological activity and influences local mineral deposits, providing valuable clues about Earth's past environments and potential habitats for life in extreme conditions. Despite the harsh climate, these microbialites demonstrate the adaptability of microbial life and contribute to our understanding of biosignatures in both Earth and possibly extraterrestrial environments.