What is the smallest aniamal?

Answer 1

Plankton are very small, microscopic plants and animals. They have little or no power of locomotion and float in surface waters. They are found in fresh and salt water. Planktonic animals include protozoans. While they are often referred to as one-celled animals, they have characteristics found in both plants and animals. Most protozoans cannot be seen without a microscope. There are about 30,000 species of protozoans that have been identified so far!