A recent episode of CNN’s “Unseen World” has a wonderful interview with cell biologist Clare Waterman, who, as host Max Foster says, “gazes through the microscope at a bizarre and wonderful unseen world.” Waterman offers commentary on a vivid gallery: A human T-cell killing a cancer cell; microbial “rush hour” in a single drop of pond water; the penicillin mold growing; the small-but-mighty hydra fending off an aggressive mosquito larva.

Waterman is an MBL Whitman Center scientist from the National Heart, Lung and Blood Institute, and former director of the MBL Physiology course.

The episode is below. (The interview with Waterman is the first 15 minutes.)