86095
They generally do not live in freshwater although there are a few known exceptions , such as the bull shark and the river shark , which can be found in both seawater and freshwater .
 bull shark, river shark
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:
 bull shark, river shark