Symmetry Marine Biology Notes

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

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

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