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There are now five generally accepted subspecies of bar-tailed godwit , listed from west to east : In a major staging site in the northern Yellow Sea , they continue to hunt polychaetes , but most of their food intake is the bivalve mollusc " Potamocorbula laevis " , which they generally swallow whole .
 location: Yellow Sea; animal: polychaetes
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 location: Yellow Sea; animal: polychaetes