Answer
The bacteria imaged using Moerner's 3D super-resolution technique were Caulobacter crescentus, which is a freshwater, rod-shaped bacterium that exhibits a unique cell cycle involving two distinct cell types: swarmer cells and stalked cells. This organism has served as a model organism in studying various cellular processes, including cell division, chemotaxis, and differentiation, due to its relatively simple genetic makeup and well-characterized life cycle.