89105
New approaches of long-term monitoring of oxygen regime in the ocean observe online the behavior of fish and zooplankton , which changes drastically under reduced oxygen saturations ( ecoSCOPE ) and already at very low levels of water pollution .
 fish, zooplankton
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:
 fish, zooplankton