To date, and over decades, National Geographic photographer and fellow Joel Sartore has made portraits of more than 5,000 creatures to show they are worth saving. This exhibition features many iconic images, often taken at zoos and aquariums. Witty and charismatic, the portraits make endearing ambassadors of the animals central to Sartore’s critical mission. “Every year I see more habitat loss, more species consumed for food, medicine, or simply decoration,” he says. “The Photo Ark was born out of desperation to halt, or at least slow, the loss of global biodiversity.”