Elizabeth Halliday grew up exploring the deserts around Tucson, Arizona, and found that nothing was more different—and exciting—than trips to the beach. She pursued her interest in marine science as an undergraduate at the University of Maryland, as an exchange student at the University of Vienna, and later as a Ph.D. student in the MIT/WHOI Joint Program. Her thesis dealt with coastal water quality at local beaches, but her studies of microscopic marine life have taken her around the world, from a marine research station in the Mediterranean to an Antarctic icebreaker. Along the way, she developed a passion for communicating the wonder and value of science.