I often think of my work as a collection of moments in the sea. The wildlife photographs I make are the result of firing the shutter at a precise instant when an animal is captured in a blend of light, color, gesture and grace. And though the resulting photo can be viewed for decades, the moment in which it was made remains a ghost—an apparition that quickly vanishes into the past. But such is the beauty of photography, the quest to preserve a moment in time and to tell a story with each frame.

For most of the past year I’ve been deeply immersed in a story about dolphin cognition. Among the locations I’ve worked has been the Bahamas, where Dr.