'Beneath the Surface' explores the inner workings of Ten Mile Lake in Cass County, Minnesota. And from this intimate study, complemented by elegantly detailed illustrations in pencil, ink, and watercolour, we learn how the physical characteristics of a lake affect the plants and animals within it and how the various forms of life inhabiting a lake interact. Carlson explores how the dynamics of a lake shift from day to night and from season to season. He outlines the effects of a storm on the wildlife below and reveals what the loon's four main types of calls communicate. He explains the impressive intricacies of a beaver's lodge design. And through special chapters that reveal the rhythms and constraints of various species of fish, Carlson shows anglers how to hone techniques to heighten fishing success.