3891
Of the krill sampled between 1979 and 1989 , the vast majority ( over 99 % ) was northern krill ( " Meganyctiphanes norvegica " ) ; only one stomach contained " Thysanoessa longicaudata " .
 animal: northern krill
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:
 animal: northern krill