Acrobatic choanoflagellates could help explain how multicellularity evolved
A new single-celled species forms groups of multiple individuals that change shape
A newly discovered species of single-celled choanoflagellates forms arrays of many individuals, which can rapidly morph from feeding mode (left, shown in false color) to swimming mode (right).
Thibaut Brunet
There’s not much to a choanoflagellate.