An example of images taken at the start (left) and at the end (right) of the experiment. Measurements were performed in the free software ImageJ (version 1.42a). This particular coral piece was reared in the lowest applied current density (LI: 2.0V, ≤0.06 A m-2). A new bud has developed from a small protrusion into a long calice, and the upper left calice (numbered 4, 5) has grown noticeable.