Laetitia Plaisance is a marine biologist who received her doctor of philosophy degree from the university of Perpignan in France. She has since been studying coral reefs in many locations around the world. As a research scientist at the National Museum of Natural History, Smithsonian Institution, she specialized in the study of coral reef biodiversity. She has developed, as part of the international Census of Marine life project, new methods to assess and monitor this extraordinary and threatened diversity. In collaboration with the Australian Institute of Marine Science she is now exploring how ocean acidification will impact coral reef biodiversity in the future and the ecological consequences for the entire ecosystem.