Ancestors of Volvox algae made the transition from being a single-celled organism to becoming a multicellular colony at least 200 million years ago, during the Triassic Period. At that time ...

2x magnification Havi Sarfaty Though this looks like Pac-Man chowing down, this third-place image features the daughter colonies of volvox algae bursting free from a mature colony. 100x ...