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The 4 million deaths of common murres during the intense marine heatwave was the biggest wildlife toll in modern history, the study says
A study revealed that 4 million common murres died during the North Pacific marine heatwave known as the 'Blob,' marking the biggest bird die-off in recorded history.
Despite reduced overall ice coverage in Canada's Northwest Passage, the Arctic shipping season is shortening due to increased mobility and breakage of sea ice creating navigational hazards.
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