Ever wonder why Earth bulges at the equator? That slight oblate spheroid shape—caused by the planet’s spin—may have made higher life possible. Without it, the surface would be so unstable that evolution as we know it might never have happened. | The Randall Carlson

Brain coral is a common name given to various corals in the families Mussidae and Merulinidae, so called due to their generally spheroid shape and grooved surface which resembles a brain