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Arctic research

Scientists Uncover Extreme Life Inside Arctic Ice

Strategic Insights

— 2 min read

For the first time, researchers have discovered that Arctic algae, specifically single-celled diatoms, are capable of movement at incredibly low temperatures, reaching as low as -15°C, the lowest recorded temperature for movement by a eukaryotic cell. This groundbreaking finding challenges the assumption that these organisms were dormant or trapped in the ice and has significant implications for understanding the ecology of the Arctic environment.

Key Takeaways:

  • Researchers at Stanford University studied single-celled diatoms from the Arctic that were previously assumed to be hibernating in the ice and found they were actually quite active, with the ability to move at temperatures as low as -15°C.
  • This activity, which continued when temperatures dropped to -15°C, is the coldest-ever movement recorded for a eukaryotic cell.
  • The diatoms move through a type of gliding, enabled by a combination of mucus and molecular motors that are similar to systems seen in human muscles.
  • The discovery has significant implications for understanding the ecology of the Arctic environment, including new information about the food chain and ice formation.
  • The research team used a range of on-ship microscopes and lab experiments to study the diatoms and recreate their environments in a petri dish containing a thin layer of frozen freshwater and a layer of very cold saltwater.
  • The findings suggest that the diatoms are not just surviving but are actively gliding through the ice, potentially playing a critical role in the Arctic food web and ecosystem.
  • The research raises questions about adaptation to a changing polar environment and the potential role of diatoms in moving resources through the Arctic food web and seeding new ice formation.
  • The study highlights the importance of continued polar research funding, with the National Science Foundation predicting a 70% reduction in funding, which could lead to a loss of knowledge about entire branches in the tree of life.

Statistics:

  • -15°C: The lowest temperature at which eukaryotic cell movement has been recorded.
  • 45 days: The duration of the Arctic research expedition aboard the research vessel Sikuliaq.
  • 12 stations: The number of ice cores collected throughout the summer of 2023.
  • 70%: The predicted reduction in polar research funding by the National Science Foundation.

Sources:

  • PNAS (Proceedings of the National Academy of Sciences): [https://www.pnas.org/doi/10.1073/pnas.2423725122](https://www.pnas.org/doi/10.1073/pnas.2423725122)
  • News.stanford.edu: [https://news.stanford.edu/stories/2025/09/extreme-life-arctic-ice-diatoms-ecological-discovery](https://news.stanford.edu/stories/2025/09/extreme-life-arctic-ice-diatoms-ecological-discovery)

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