This course is a field‐based investigation into the diversity, ecology, and physiology of fishes living in coastal habitats of Atlantic Canada. The major theme is how habitat‐specific abiotic and biotic environmental factors shape the function and ecology of fishes. Using a hypothesis‐driven approach, emphasis will be placed on the fundamental tasks of acquiring and expending energy to survive and reproduce, as well as the profound influence of temperature on organismal performance. The course involves field and lab exercises, with supplementary lectures. Students will gain experience with techniques for sampling wild fishes, experimental approaches to study the functional ecology of fishes, and identification and quantification of fish assemblages in subtidal, intertidal, and estuarine habitats in the Bay of Fundy region. NOTE: This course is offered exclusively in the Marine Semester.