Student Project Figures Figure 6 The images show the process by which the colony is reduced to a 'carpet' of ampullae during the latter stages of hibernation. (a) An enlarged image of the peripheral ampullae surrounding an active colony. (b) A view of the entire colony with the ampullae demarcated by the double line of small white arrows. (c) An image of the ampullae of a hibernating colony. (d-e) The ampullae have expanded at this stage and the zooids have regressed during hibernation. (g) The entire colony is reduced to a carpet of ampullae. Bars = 1.0 mm. Image adapted from Hyams et al., 2017.  Figure 6