Zoos and aquariums today consider education to be a central role. The vision of the World Association of Zoos and Aquariums (2005, p. 35) is that "Zoos and aquariums with their unique resource of live animals, their expertise, and their links to field conservation will be recognized as leaders and mentors in formal and informal education for conservation." Most zoos and aquariums have education staff and trained volunteers who provide education programs for school groups and general visitors; animal demonstrations routinely convey education or conservation messages; and interpretation and education are an integral part of zoo and aquarium exhibits. Although conservation education is an accepted part of the mission of modern zoos and aquariums, it is not usually at the top of most visitors' "to do" list for their day at the zoo. This chapter explores visitors' environmental learning in zoos and aquariums, inclusive of narrative accounts that demonstrate the impact of such experiences in the lives of visitors regarding the process and outcomes.