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During that time , people used bipointed bone objects and line to catch fish and began making beads from shells of the marine olive snail ( " Olivella biplicata " ) .
 Olivella biplicata
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Olivella biplicata