Fact 1: An aquatic animal requires great amounts of water to survive.

Fact 2: Fish can survive in water by using their gills to extract the dissolved oxygen.

Given the two facts above, answer the question "What requires great amounts of water to use their gills to extract dissolved oxygen?" with the following options: 
- most cephalopods
 - alligators
 - starfish
 - aquatic animals
 - Jellyfish
 - water foul
 - platypus
 - Lobsters


 

    aquatic animals     