Why is a zooplankton called as a zooplankton?

The term "zooplankton" derives from the Greek Words "zoon," meaning "animal," and "planktos," meaning "drifter" or "wanderer." Zooplankton are small, often microscopic animals that drift in water bodies, including oceans, lakes, and rivers. They play a crucial role in aquatic ecosystems as both consumers of phytoplankton and as a food source for larger organisms. Their classification as "plankton" highlights their inability to swim against currents, making them dependent on water movement for transportation.