1. Symmetry
Marine Biology Notes

2. Asymmetry
Without symmetrical shape. Cannot be cut into half in any way and have equal sides with not top bottom or front or back
Example Amoeba

3. Radial Symmetry
Organisms that can be cut in 2 equal halves in many different places.
Only have a top and a bottom.
Oral and Aboral sides (always moves forward any direction it is going)
Examples: Anemone, Jellyfish, Sea Star

4. Bilateral Symmetry
Organisms that can only be bisected in one place and still have mirror images on each side.
Bilateral organisms have a top (Dorsal), bottom (Ventral), front (anterior) and back side (posterior).
Examples: Dog, Human, Most higher order animals