There was a small ice-free 'polynya' between the frozen continents and the open ocean where microscopic marine life prevailed, which would have provided otherwise unavailable food for fish and mammals.The study was led by Geological Survey of Norway (NGU), the Centre for Arctic Gas Hydrate, Environment and Climate at The Arctic University of Norway, and the Centre for Chemical Sciences at the University of Plymouth.
The researchers believe their findings are of international importance since they show the vulnerability of marine ecosystems in the northern oceans to periods of rapid climate change, but also their adaptability to various extreme climate states.
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