An example of an organism that exist as a colony is

Volvox is an example of an organism that exists as a colony. A colony is a group of individual organisms that live together and function as a unit, but are not dependent on each other for survival. Volvox is a type of green algae that forms spherical colonies of hundreds or thousands of individual cells. These cells are arranged in a single layer on the surface of the colony, with the flagella (whip-like structures) of each cell facing outward. The colony moves through the water by the coordinated movement of these flagella, which creates a current that propels the colony forward. The individual cells of the colony are specialized for different functions, such as reproduction, photosynthesis, and locomotion.