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The Finnish Archipelago Sea is impacted by drifting algal mats that consume oxygen during their decomposition when they sink to the bottom . ( 15 ) By contrast , hypoxia is rare in the northern Baltic Sea estuaries located in the Bothnian Sea coastal zone where nutrient loads are lower .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Anatomy 
Text: {0} 
Answer:
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