* Sponges: These simple multicellular organisms lack any real symmetry. They are often irregularly shaped and grow in response to their environment.
* Sea anemones: Although they possess radial symmetry in their basic structure, the arrangement of their tentacles and other features can be quite asymmetrical.
* Flatworms: These creatures often have a flattened, elongated body with a distinct head region. While they have bilateral symmetry, they can exhibit asymmetry in their internal organs and their external appearance.
* Some snails: Some species of snails have shells that are not symmetrical, creating a distinct left- or right-handedness.
* Certain types of fish: Some flatfish, like flounders, have a body that is asymmetrical, with both eyes on one side of their head.
It's important to remember that even within species, there can be variation in the degree of asymmetry.